recursal/Fanatic-Fandom huggingface dataset:
Arrays (documentation)

**Arrays** are in many programming languages and are useful for storing data. In JavaScript and Khan Academy's Processing JavaScript evironment, the syntax for arrays are:

`var a = [b, c, d, ...]`

Where `a` can be any variable name and `b`, `c` and `d` can be anything such as numbers, objects, booleans, etc... Arrays can have as many entries as you want.
Functions

**Functions** are the ninth general topic in Khan Academy's Intro to JS: Drawing & Animation course.

The topic contains the following subtopics:

1. Functions
2. Challenge: Say Your Name
3. Function Parameters
4. Challenge: Moles in Holes
5. Function Return Values
6. Challenge: Calculator
7. Local and Global Variables
8. Special ProcessingJS functions
9. Review: Functions
10. Project: Fish Tank

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
HTML

**Hyper Text Markup Language**, also known as **HTML**, is used for structuring webpages with something called **markup**. This is basically a way of laying out different webpage elements with a simple named unit known as a **tag**. By arranging these in the way you want you can create your very own structured website.

Coupled with the power of CSS, you can style everything just the way you want! The sky is the limit!

You can also write **dynamic scripts** in a scripting language known as JavaScript. With JavaScript, you can write scripts that change the website based on user interaction or many other factors without the page being refreshed!

With these languages in your toolkit, you have the ability to become a modern-day front-end web developer!

## Commonly Used Elements

*Here are some commonly used elements for structuring, styling, and scripting to give you a basic overview of what to expect from HTML:*

```
<div></div>

```

* A "dividing" element after which there exists a line break.

```
<span></span>

```

* An element that can go inside another element to style single words or parts without breaking the flow of the text.

```
<style></style>

```

* A way to style text using CSS.

```
<body></body>, <head></head>

```

* The body tag is where you put the elements that you want to show in the actual webpage. Think about it this way: the "head" tag preconceives what the body will look like. What you see is the body, not the mind.
* The head tag commonly includes meta, title, and link tags.

```
<html></html>

```

* Without this tag, the HTML documents will either throw errors or will not parse.

```
<script></script>

```

* This controls how elements are placed and how things look using JavaScript.

```
<a></a>

```

* External and internal links are created with this tag.

```
<p></p>

```

* This is the "paragraph" tag.

```
<em></em>

```

* This tag creates italics.

```
<strong></strong>

```

* This tag creates bold.

```
<br>

```

* This creates line breaks.

## Sites with HTML lessons

* Codecademy
* Codepen.io
* Khan Academy
* Little Web Hut
* SoloLearn.com
* Treehouse
* W3Schools

## Featured users that know HTML

* Blaze
* Eytukan
* DY
* KingCodeFish
* Vanilladazzle
AngularJS

**AngularJS** is a JavaScript library that works with the Model View Controller in order to allow single page applications.

## Syntax

```
<html ng-app>

       <head>

           <title></title>

           <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/<code>angular.min.js</code>"></script>

       </head>

   </html>

```
Code.org

This group has its own website for learning code, and also provides partner content and helps to sponsor the coding area on Khan Academy.

* How the Internet Works

This mini online course from Code.org teaches some of the material taught in your most basic computer 101 college course in 6 videos about 5 minutes or so in length each. Professionals employed by name brand businesses such as Microsoft and Symantec are brought in to explain the basics of internet workings and security to us as viewers. Pamela paid homage to this course by making a contest for entries to write a program inspired by this section of the partner content.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Humanities: Grammar

In January of 2016, Khan Academy began rolling out their frequently requested and much anticipated **Grammar Course**. David teaches users "The Parts of Speech." The first videos in the grammar section were videos about nouns: people, places, things, and ideas. As David mentions, ideas are often lost on others teaching about nouns.

He divides the grammar section as follows:

* Introduction
* The Noun
* The Modifier
* The Verb
* The Pronoun

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Archives, Memory, and Conservation

You might think of an archive as a collection of documents and records, files tucked away in boxes, or even the building that houses those records. But what do archives have to do with art? How do we store and preserve the things that artists leave behind, be that actual works of art or ephemera like sketches and drawings? Learn more about the nature of archives, see how artists work with ideas of memory, and go behind the scenes to see how Tate’s team of art conservators bring science into the gallery to fix, preserve, and restore works in the collection.

* Introduction
* Activities
* What is an archive?
* Art and Memory
* Conservation: Behind the scenes

Learn more about this on Khan Academy.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
LC natural response derivation 2

***LC natural response derivation 2*** is a video in the Circuit Analysis category/Natural and Forced Response sub-category of Khan Academy's Electrical Engineering course.

Starting from the differential equation, we come up with a proposed exponential solution and plug it into the equation. This gives us a characteristic equation. A "natural frequency" emerges. Created by Willy McAllister.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Mask

Met curator Joanne Pillsbury on immortality in **Mask**, 10th–6th century B.C.E., by the Olmec peoples of ancient Mexico.

Depicting a typical Olmec face with slanted, almond-shaped eyes and a toothless, slightly downturned mouth, this mask is rendered with simplicity and elegance. Its harmonious proportions are indicative of the sophistication attained by Olmec sculptors. The smooth, highly polished planes of cheek, forehead, and chin plus the almost fleshy quality of the nose and parted lips belie the incredible hardness of the jadeite cobble from which the mask was made. The face itself is neither human nor supernatural but, rather, an idealized type that incorporates otherworldly aspects—such as the mouth, with its reference to the so-called were-jaguar, a powerful mythic being with human and jaguar traits.

Masks of this size in stone have not been excavated in archaeological sites and it is difficult to determine their function. Lacking holes for eyes and nose, it could not have been worn over a living face, but there are attachment holes along the edges by means of which it might have been used as a costume element or adhered as a face to a mummy or a sacred bundle. There is a polished, circular depression on the back of the mask.

View this work on Khan Academy here or at metmuseum.org.

Created by The Metropolitan Museum of Art.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Impedance of simple networks

***Impedance of simple networks*** is a video in the Circuit Analysis category/AC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Impedance of 2 elements in series is a complex number. Impedance terminology: reactance, susceptance, admittance.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Meet the artist: JMW Turner

**JMW Turner** incorporated the changes in his world into his painting. He painted landscapes as the industrial revolution was changing them. Also, William Herschel, an astronomer, changed the way scientists looked at the sun, and Mr. Turner incorporated this into his painting. This is discussed further in the partner content on Khan Academy.

Learn more on Khan Academy.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Crash Course

Crash Course is probably the most popular Partner from the partner content on Khan Academy. These videos are also listed in Humanities and Science.

* Crash Course World History
	+ John Green: host.
	+ The expression DFTBA comes from this partner and Crash Course.
	+ DFTBA stands for "Don't Forget To Be Awesome"
	+ The course has an ongoing joke about how the Mongols are the exception to everything.
	+ The Mongol comments usually come as, "Wait for it - The Mongols." Then they charge in saying "We're the exception!"
	+ The DFTBA site sells T-shirts about the mongols expression.
* Crash Course Biology and Ecology
	+ Hank Green host
	+ Biology and Ecology are the subsections
* Crash Course Chemistry
	+ Hank Green host

This content can be found on Khan Academy here.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Human Evolution

Evidence collected during the five-year voyage of the HMS Beagle led to Charles Darwin’s revolutionary theory that all species, including humans, adapt to different environments and change over time through the process of natural selection. Since a Neanderthal skullcap was discovered in 1856, thousands more fossils have helped paleoanthropologists piece together the story of our ancient ancestors, from early hominins who lived more than six million years ago to modern Homo sapiens, who evolved 200,000 to 150,000 years ago. In the 1990s, geneticists joined the effort, using DNA to shed light on how modern humans are related to one another and what makes our species unique.

These videos and essays cover the evidence for human evolution and how understanding evolutionary biology benefits human health and well being.

This content can be found on Khan Academy

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Inductor i-v equations in action

***Inductor i-v equation in action*** is an article in the Circuit Analysis category/Natural and Forced Response sub-category of Khan Academy's Electrical Engineering course.

The article provides a look at the inductor i-v equations and why important to give inductor current a place to flow.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Ben Milne - CEO of Dwolla

Ben Milne is an entrepreneur that created Dwolla, a company that moves money around on the internet cheaper than the credit card companies. Like many great inventions/creations, it stemmed from a problem. He was doing business online and he just got too sick of paying so many credit card fees to exchange money with his customers. He asked a lot of questions of the "right people" where he was able to make this happen.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Application of the fundamental laws

***Application of the fundamental laws*** is an article in the Circuit Analysis category/DC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Solving a circuit by direct application of the fundamental laws: Apply element laws (Ohm's Law and the like) plus Kirchhoff's Laws to solve for the currents and voltages of a circuit.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Kirchhoff's voltage law

***Kirchhoff's voltage law*** is a video in the Circuit Analysis category/DC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Kirchhoff's Voltage Law says if you travel around any loop in a circuit, the voltages across the elements add up to zero.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Dinosaurs

The Museum Of Natural History has made videos about **Dinosaurs**. They are on Khan Academy, the museum's site and also on YouTube at the links listed below. Note that some of these videos may not be on Khan Academy.

Episode 1: What Is and Is Not a Dinosaur?
http://youtu.be/Me8BrHY57JI

Episode 2: Who Discovered the First Dinosaur Fossils?
http://youtu.be/FbPGrB-BmH0

Episode 3: How Do Dinosaurs Get Their Names?
http://youtu.be/Wrdmw\_Ioovk

Episode 4: Are Any Dinosaurs Still Alive Today?
http://youtu.be/947j2zXm8WA

Episode 5: How Many Kinds of Dinosaurs Are There?
http://youtu.be/xdGe2tMdjxs

Episode 6: Where in the World Did Dinosaurs Live?
http://youtu.be/0lGXGz\_lALM

Episode 7: What Is the Earliest-Known Dinosaur?
http://youtu.be/62LK\_Ny905o

Episode 8: What Were the Biggest and Smallest Dinosaurs?
http://youtu.be/Icp9eIVMBwU

Episode 9: What Did Dinosaurs Eat?
http://youtu.be/dYrNWPyLtlI

Episode 10: How Fast Were Dinosaurs?
http://youtu.be/GKsygFxt4XI

Episode 11: How Intelligent were Dinosaurs?
http://youtu.be/pXFHtwVQxqk

Episode 12: Did Dinosaurs Fight?
http://youtu.be/hiqlCBH-5C0

Episode 13: How Did Dinosaurs Reproduce?
http://youtu.be/Kp4Dg8XBeUA

Episode 14: Did Dinosaurs Travel in Herds or Packs?
http://youtu.be/jtbpusl0Vo0

Episode 15: What Was Dinosaur Skin Like?
http://youtu.be/6i3EmBNYptk

Episode 16: How Fast Did Dinosaurs Grow, and How Long Did They Live?
http://youtu.be/KyUptMWcmZI

Episode 17: What Color Were Extinct Dinosaurs?
http://youtu.be/bN7XTFlxPTI

Episode 18: Were Dinosaurs Warm-Blooded?
http://youtu.be/oy8Kvt1vOto

Episode 19: How Did All Dinosaurs Except Birds Go Extinct?
http://youtu.be/mCKeogDioWE

Episode 20: Can We Clone Extinct Dinosaurs From DNA Preserved in Their Fossils?
http://youtu.be/H1E\_Nwj2dro

Episode 21: What Is a Fossil?
http://youtu.be/WWHJqnfmhQ8

Episode 22: How Do We Know Where to Look for Dinosaur Fossils?
http://youtu.be/XQRZqG7wCPQ

Episode 23: How Are Dinosaur Fossils Discovered and Collected?
http://youtu.be/rYjs8Wtfnzo

Episode 24: How Are Dinosaur Fossils Prepared in the Laboratory?
http://youtu.be/6brUGBR6ll0

Episode 25: How are skeletal mounts of dinosaurs in museum exhibits built?
http://youtu.be/FZNq4SgUqgE

Episode 26: Where are all the dinosaur fossils kept once they're prepared?
http://youtu.be/r8ENj3lTTWk

Episode 27: How Do We Know Which Kind of Dinosaurs Were Most Closely Related?
http://youtu.be/3gNw\_6DoVc8

Episode 28: How do we know how long ago dinosaurs lived?
http://youtu.be/6pYPqtdTnrM

Episode 29: In what kind of environments did dinosaurs live?
http://youtu.be/62Z-iSwh3i4

Episode 30: How does studying dinosaurs benefit humanity?
http://youtu.be/vGzVaprEbqs

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Elon Musk - CEO of Tesla Motors and SpaceX

Elon Musk is quite the entrepreneur. He has dabbled successfully in many ventures. He leads off telling about how the line was stopped in the Tesla factory because somehow they didn't have enough $3 USB cables. The cables got stuck in customs. So, he sent people out to the local companies to buy up all the USB cables.

He also financed space exploration for NASA. So, he spoke some about getting into space.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Complex rotation

***Complex rotation*** is a video in the Circuit Analysis category/AC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Multiplying a real or complex number by the imaginary unit j corresponds to a rotation by +90 degrees. This is the key feature of j that makes it such a useful number.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Linda Jeschofnig

**Linda Jeschofnig** (pronounced yeh-shof-nig), along with her husband, came up with the Hands-on Labs.

They were living in snowy and mountainous Colorado, where her husband was a chemistry professor. There would be times when students couldn't get in to the college to do their labs. So, they created this lab pack of chemicals for students to take their chemistry classes fully online, including doing the lab work at home.

She likes to say that, "you only need a poof, not a kaboom." The lab packs that are sent out include chemicals to do an experiment on a smaller scale than one might do in the lab.

Linda herself being a professor in accounting and business, helped her husband set this up. A particular challenge they faced was finding an insurance provider. She managed to find an insurance guy that had majored in chemistry in college.

Linda is passionate about advancing science education and excited to be a part of a community of females in science and female entrepreneurs.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Euler's formula

***Euler's formula*** is a video in the Circuit Analysis category/AC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

***Euler's formula*** relates the complex exponential to the cosine and sine functions. This formula is the most important tool in AC analysis. It is why electrical engineers need to understand complex numbers.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Curators

## What is a curator?

Merriam-Webster's website defines a curator as, "a person who is in charge of the things in a museum, zoo, etc."

## Curators on Scratch

Users on Scratch can make (a) studio(s), which, a lot of the time are like clubs. The curators are like the members and they also can add projects to that studio's gallery. They can remove a project they added. A Front Page Curator gets to select the featured projects for the front page for two weeks. There's an application process for doing so and restrictions on the projects they may feature, such as not their own projects.

## External references

http://www.merriam-webster.com/dictionary/curator

https://wiki.scratch.mit.edu/wiki/Studio#Curators
Lead lag

***Lead lag*** is a video in the Circuit Analysis category/AC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Sine and cosine look similar, except they are out of phase. When we talk about sine and cosine as a function of time, the difference is called "lead" or "lag".

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Intro to HTML/CSS

# Intro to HTML/CSS: Making webpages

Learn how to use HTML and CSS to make webpages. HTML is the markup language that you surround content with, to tell browsers about headings, lists, tables, etc. CSS is the stylesheet language that you style the page with, to tell browsers to change the color, font, layout, and more. Learn more about it it in Khan Academy's computing section.

## Intro to HTML/CSS

Intro to HTML/CSS: Making Webpages

* Intro to HTML
* Intro to CSS
* More HTML tags
* CSS text properties
* Web development tools
* CSS layout
* More CSS selectors
* Other ways to embed CSS
* Further learning

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Intro to Objects

In the **Intro to Objects** talk-through, Pamela introduces the viewer to the concept of Objects, a method for storing multiple related pieces of information in a single variable.

As an example, Pamela creates a program that displays various information about Winston.  She begins by doing this using variables, as learned in a prior lesson.  She then explains how it's possible to store information in one defined **object** using properties, which consist of a **key** and a **value**.

The syntax for defining an object and its properties is:

```
var test = {
    item1: "xyz",
    item2: 13,
    item3: false
};

```

To access a property defined in an object, the user utilizes what's known as "dot notation".  In the above example, to access the value of item1, the user would reference the following in their code, which represents the object name (in this case, "test"), a dot "." and then the key name (in this case, "item1"):

```
test.item1

```

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Black Hole badges

According to Khan Academy, "**Black Hole** **badges** are legendary and unknown. They are the rarest Khan Academy awards".

## Black Hole Badges on Khan Academy

The "easiest" Black Hole badge to attain so far is Tesla. However, Black Hole badges are intended to be quite difficult to attain. In the Khan Academy social circles, such as the members of the KAOS wiki, there are individuals with the Tesla badge. For example, Vanilla Dazzle-founder of this wiki, Tuner King 5-chat moderator, Light Runner-former active KAOS wikian, Blaze Runner-KAOS wikian, TJ-visitor to the KAOS chat room and others have attained this badge.

### Known Wikians with the Tesla badge

* Vanilla Dazzle–founder of KAOS

* Tuner King 5–Chat Moderator of KAOS

* Light Runner–active CHAOS wikian

* Blaze Runner–A CHAOS Wikipedia

* TJ–An active editor and chassis my rebuttals and KAUsers

* The Original Mikey-Just some random dude.

* Others

KAOS tracks Khan Academy users close to attaining Tesla, as well as the progress of those users that have already reached this milestone.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Duolingo Top Information Bar

The following items are found on the Duolingo information bar:

* Home
	+ The home tab displays all the skills for the current language. There is also a link for the Lingot Store.
* Words
	+ For the current language, the number of words learned is shown, and the words are listed giving their part of speech, when last practiced, and presumed strength of word.
* Activity
	+ level ups, practicing a skill, activity of followers
* Discussion
	+ Duolingo's onsite discussion board, optional topics are each of the languages the user has begun to study or Duolingo in English (or presumed native tongue).
* Language - The languages the user has studied and the option to add another language is here. See the screen shot below:

* Username - listed here
* Streak - refers to total Duolingo streak without regard to which language was studied.
* Lingots - displays the number of Lingots earned in all languages
* Nofifications - comments on the user's wall and other users friending/following.
LC natural response

***LC natural response*** is an article in the Circuit Analysis category/Natural and Forced Response sub-category of Khan Academy's Electrical Engineering course.

This article provides us with an ntuitive description of the natural response of an inductor-capacitor circuit.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
College Admissions

College Admissions

Navigate the section college admissions like a pro with Khan Academy's evolving
resource! Inside, find advice that is relevant for all college
applicants in addition to portions tailored for high potential students
who are worried about whether they can afford higher education.

* Getting started
* Making high school count
* Exploring college options
* Applying to college
* Paying for college
* Wrapping up

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Microeconomics

Economics: **Microeconomics**

* Supply, demand, and market equilibrium
* Elasticity
* Consumer and producer surplus
* Scarcity, possibilities, preferences and opportunity cost
* Production decisions and economic profit
* Forms of competition
* Game theory and Nash equilibrium

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Advanced JS: Games & Visualizations

**Advanced JS: Games & Visualizations** is the second course in Khan Academy's Computer Programming section.

## Courses

* The course covers the following subtopics:
	1. Intro to Games and Visualizations
	2. Scene management
	3. Buttons
	4. Transformations
	5. 3D Shapes
	6. Making a Side Scroller: Hoppy Beaver
	7. Making a Memory Game

## Categories

* Coding talk throughs
* Challenges
* Projects
* Text pages
* Quizzes

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Kirchhoff's current law

***Kirchhoff's current law*** is a video in the Circuit Analysis category/DC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Kirchhoff's Current Law says the currents flowing into a node must add up to zero.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
JavaScript AND

The **JavaScript AND (&&)** is a logical operator in JavaScript and Khan Academy's Processing JavaScript environment that returns a `true` value if and only if both values are true. An example is `if(happy && satisfaction > 80){...}`, where the programs checks if *both* conditions are true in order to return a `true` value. If just one or none of the conditions are true, the program returns a `false` value.
Drawing More Shapes with Code

In the Drawing basics tutorial "**Drawing more shapes with code**", as the name implies, Pamela demonstrates how to draw more shapes. She turns a human face into a robot face. The `x` and `y` for an ellipse refers to its center. Whereas, the `x` and `y` used for a rectangle are for the upper left corner. She also teaches comments and lines. Comments start with `//`. Lines are called by the start point and end point. Finally, she shows us that the program reads code from top to bottom. A new user may draw on top of what they need and block it.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Duolingo

**Duolingo** is a free online site dedicated to helping users learn different languages.

## Subtopics on Duolingo

* Duolingo Languages
* Duolingo Exercise Status Bar
* Duolingo Top Information Bar
* Lingot
* Lingot Store
* XP

## External links

* Duolingo Wiki - For more in depth coverage of Duolingo related topics
* The Portuguese Duolingo Wiki
* Duolingo
Introduction to Variables

The **Intro to Variables** tutorial introduces the ideas of incorporating variables in the Intro to JS: Drawing & Animation programming method.

## Intro to Variables

In this tutorial , the user learns how variables can "hold on to" a value, such as a parameter or color, until used later again in the script. For example, `var eyeSize` (as shown in the screenshot) can be defined, and then have a value assigned to it, such as `var eyeSize = 3`. Winston's eyeSize is actually the example in this coding talk through.

The **syntax** to defining variables is:

`var x = value;`

A value can be assigned to any given previously stated variable by defining it on the right side of the equal sign. The user can, for example, assign a color or (pixel) value to a variable.

Example:

   `var eyeSize = 33;`

or,

`var eyeColor = color(0, 0, 0);` (rgb value)

## External Sources

1. ↑ https://www.khanacademy.org/computing/computer-programming/programming/variables/p/intro-to-variables

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Giles Shih - President and CEO of BioResource International

**Giles Shih** created BioResource, which produces a natural enzyme to make chickens and pigs digest their food more efficiently. However, as Mr. Shih states, they "are not just making bigger chickens, they are feeding the world."

Learn more on Khan Academy here

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Application of the fundamental laws (solve)

***Application of the fundamental laws (solve)*** is a video in the Circuit Analysis category/DC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Solving the equations created by direct application of the fundamental laws: Ohm's Law and Kirchhoff's Laws. (Part 2 of 2).

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Africa

The British Museum's **African collection** includes over 200,000 everyday objects and unique works dating back to ancient times. These objects come from all over the continent, and show the diversity of its culture.

* Introduction to Africa
* Ancient Egypt
* Aksum
* Ife
* Benin
* Sierra Leone

Learn more about this on Khan Academy in the partner content.

(note: this description is original-not from KA)

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Dave Smith - CEO & Founder of TekScape IT

**Dave Smith** founded TekScape which does IT consulting in and around the New York City area. They sell commercial businesses a phone system. Beyond the systems themselves, they sell the installation and also sell the tek support management to those systems.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
All Star Orchestra

The All-Star Orchestra encourages greater appreciation of classical music as a living tradition. The topic is listed under both partner content and humanities. Top orchestral players from across the United States meet once-a-year in New York to record masterpieces and new works with Music Director Gerard Schwarz. Come behind the scenes, meet the musicians, attend an open rehearsal, gain a conductor's perspective, and have a first-person encounter with the music.

Learn more about this here.

* Music basics
* Masterpieces old and new
* Instruments of the orchestra

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Fish Tank Project

**Project: Fish Tank** is the capstone project at the end of the Functions section of the Intro to JS course on Khan Academy.

## Project goals

The 4 things the user must confirm before submitting the project:

1. Contains a function that can draw a fish or some other object.
2. Must pass in at le786578ast two arguments to that function to control position or size.
3. Must call that function at least three times to draw multiple objects around the canvas, or must call it in response to user interaction.
4. Doesn't have any syntax errors or program logic errors.
5. Make sure you are cool enough to have all these fiSh

## Honor Code

Projects on Khan Academy close with an honor code

```
      I certify that this is all my original work.
      If I took any parts from elsewhere, then they
      were non-essential parts of the project, and
      they are clearly attributed at the top. I will
      show I agree to this honor code by typing "Yes":

```

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Hot List

## About

The Hot List displays the community's most popular programs on Khan Academy.

It currently displays the top forty programs and displays forty more for every time you press the "More" button.

## How

How to get on the hot list:

* Have a program that gets a lot of votes in a small amount of time.
* Have a program that gets a lot of spin-offs by different users in a small amount of time.

## Importance

Importance of the hot list:

* It gives users an extra incentive to spend more time on a single program.
* Allows programs to be seen by everybody and allows them to get votes and spin-offs.
* Helps people get "noticed" on Khan Academy.
* Can help users earn badges, avatars, and energy points.

## Removed Programs

Programs can be removed from the hot list for many reasons:

* Soliciting Votes (Requesting Votes, Making promises for votes, receiving votes from a voting ring)

* Plagiarism (Not a spin-off and not giving credit to the original author)
* Abuse (Disrespectful or Offensive )
* Using Disallowed Functionality (Accessing Externals or the DOM)
* Off Topic (Petitions to change the site)

Once a program receives three flags for any one of the above reasons, it is removed from the hot list.

All of the flagging reasons can be seen in the new program guidelines:

## Badges and Avatars

The following badges and avatars can be earned from the hot list:

* 1000 Kelvin (Have a red-hot program at the top of the Community Programs list)
* Cool Hopper (One of your programs hits the top of the Hot list)

## Spin-offs

Prior to 2014, spin-offs were allowed on the hot list.

* This was not efficient, as many spin-offs were getting on the hot list even though they didn't change anything from the original programs. Many of the spin-offs got over five hundred votes even though they didn't change at all. This caused many problems and conflicts between users and even the moderators of Khan Academy.

As of 2014 and beyond, spin-offs can not get on the hot list.

* To fix the 2013 problem, Khan Academy made it so spin-offs could not get on the hot list. This seemed good at first, but then escalated to an even worse situation. People often plagiarize programs now to get on the hot list and don't even give any credit to the original creators. Even more conflicts are occurring now.

As of 2016, it seems spin-offs can get on the hot list, but there is some sort of algorithm to distinguish between spin-offs with or without significant enough changes.

Future:

* Khan Academy is still trying to find a way to fix these conflicts in a new efficient way. Uh-oh.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Application of the fundamental laws (setup)

***Application of the fundamental laws (setup)*** is a video in the Circuit Analysis category/DC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Solving circuits by the direct application of the fundamental laws: Ohm's Law and Kirchhoff's Laws. (Part 1 of 2).

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Inverse square law

***Inverse square law*** is an article in the Electrostatics category/Electric Force and Electric Field sub-category of Khan Academy's Electrical Engineering course.

In this article, the "Fable of the Butter Gun', an intuitive explanation of the inverse square law is provided to us .

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Arts and humanities

Much of the content in the **Arts and Humanities** section on Khan Academy is also included in Partner content. Some examples of partner content here include the music section and content sponsored by various art museums. The history and Art content contains quizzes where speed badges are available. The music content contains a lot of long videos. Most of the art content is probably not appropriate for children, though it is accessible for the child accounts. The Art History Basics section should be ok for kids, though younger kids may find it boring. The Getty Museum is also a good area for kids to learn about art.

In January of 2016, Khan Academy began to roll-out their frequently requested and much anticipated grammar course.

David Rheinstrom teaches users The Parts of Speech beginning with Nouns: people, places, things, and ideas. As he mentions, ideas are often lost on others teaching about nouns.

Learn more about this here:

https://www.khanacademy.org/humanities

* Art History
* Music
* US History
* World History
* Grammar

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Critical Numbers

The **Critical Numbers** exercise appears under the Differential calculus Math Mission on Khan Academy. This exercise uses the first derivative test to find minimums and maximums of the original function.

## Types of Problems

There are five types of problems in this exercise:

1. *Find the local minimums/maximums using a graph of the first derivative:* The student is asked to find the local minimums and maximums given the graph of the first derivative.
2. *Find the critical numbers using a graph of the original function:* The student is asked to find all the critical points by using the graph of the original function.
3. *Find the values given a table of the original function and its derivative:* The student is asked to find the values of the critical numbers, minimums, and maximums using a table of the original function and its derivative.
4. *Find the amount of critical numbers there are given a graph of the original function:* The student is asked to find how many critical numbers there are by using the graph provided.
5. *Find the critical numbers of the function:* The student is asked to find the critical numbers by using the function given.

## Strategies

Knowledge of the first derivative and critical number concepts are encouraged to ensure success on this exercise.

1. Critical number: "The number c is a critical number of a function g if and only if c is in the domain of g and either or is undefined."
2. Critical points cannot be endpoints.
3. If the first derivative goes from negative to positive, it is a minimum.
4. If the first derivative goes from positive to negative, it is a maximum.
5. A global minimum is the minimum that has the lowest y-value of the original function.
6. A global maximum is the maximum that has the highest y-value of the original function.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Josiah the calculus way

He’s a Canadian Christan homeschool kid. He likes Math, Science, and computer programming. He has an arcade program called “An endless arcade!". He’d also recently reached the top of the hot list with his program of a movie theatre, with a movie about Oh, Noes, Khan Academy’s error buddy.

His profile can be reached here

## Khan Academy Highlights

He has a game called Locked Out which is his own personal favorite creation. It took him almost 2 months to finish.
Making Drawings With Code

**Making Drawings With Code** is the first programming talk through in the Intro to JS tutorial on Khan Academy. Pamela introduces basic coding vocabulary and terms. Then she teaches the user how to make a circle with code.

Important tidbits from this talk through:

* Whenever you write a command, you follow it with a set of parentheses and a semi colon.
* Inside the parentheses go parameters, if the command calls for it-which it usually does.

Vocabulary:

Function-

Parameters-

X- The number that designates the location, horizontally on the screen for the user's output

Y- The number that designates the location, vertically on the screen for the user's output

It is important to note that in programming, the y value starts in the top left corner and increases as you go down, unlike in math-the Cartesian plane-where the y value increases in the upward direction. Also, negative numbers are off screen in this set up. The negative X values are to the left of the screen and negative y values above the screen. This can be handy when animating. You may want to start an object off screen so that it's not seen or reset it when it's off screen with and if clause.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Introduction to differential equations and initial value problems

The **Introduction to differential equations and initial value problems** exercise appears under the Differential equations math section on Khan Academy. This exercise shows the basics of differential equations.

## Types of Problems

There are six types of problems in this exercise:

1. *Find the sum of the two values:* The student is asked to find the two values such that the first solution is a solution of the differential equation.
2. *Use substitution to match each differential equation on the left with an appropriate solution on the right:* The student is asked to to match the differential equation with its solution.
3. *Which of the following is a general solution to the differential equation:* The student is asked to determine the general solution to the differential equation than determine what C is for the particular solution with the initial condition.
4. *For what values of

m

{\displaystyle m}

 and

b

{\displaystyle b}

 is

# y
m
x
b

{\displaystyle y=mx+b}

 a solution:* The student is asked to determine the values of

m

{\displaystyle m}

 and

b

{\displaystyle b}

 using the differential equation.
5. *Which of the following equations is the general solution to the differential equation:* The student is asked to determine the general solution to the differential equation.
6. *Answer the following questions for the differential equation given the initial condition:* The student is asked to determine the first and second derivative of the differential equation at the initial condition and use this information to determine the behavior of the graph.

## Strategies

Knowledge of derivatives, factoring, and differential equations are encouraged to ensure success on this exercise.

1. Since

# y
m
x
b

{\displaystyle y=mx+b}

, then the derivative of

y

{\displaystyle y}

 is equal is

m

{\displaystyle m}
2. Differential equations: solutions = function(s)
3. You can find the value of m or

d
y

d
x

{\displaystyle {\frac{dy}{dx}}}

 by grouping the x's together, setting the x factors equal to zero, and then plugging in that value into b.
4. You can check your function solution by substituting it into the original

d
y

d
x

{\displaystyle {\frac{dy}{dx}}}

 equation.
5. When finding the sum of two values, factor using the least common multiple.
6. y
″

=

f
″

(
x
# )

(

d
2

y
)

(
d

x
2

)

{\displaystyle y''= f'' (x) = \frac{(d^2y)}{(dx^2)}}

## Real-life Applications

1. Growth of a population:

d
y

d
t

=
k
y
(
L
−
y
)

{\displaystyle \frac{dy}{dt} = ky(L-y)}

 when

0
<
y
(
t
)
>
L

{\displaystyle 0 < y(t) > L}
2. Chemical reaction conversion:

d
A

d
t

=
k

A
2

{\displaystyle \frac{dA}{dt} = kA^2}
3. Newton's second law of motion:

m

d
2

x

d

t
2

=
F

{\displaystyle m \frac{d^2x}{dt^2} = F}
4. Differential equations are used in heat transfer, electrical engineering, fluid mechanics, and modeling circuits.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Linearity

***Linearity*** is an article in the Circuit Analysis category/DC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

Linearity is a mathematical concept that has a profound impact on electronic design. The idea itself is quite simple, but the implications have great meaning for the field of electrical engineering.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Conflict and Contradiction in Art

Conflict and Contradiction in Art is a section of the Tate partner content on Khan Academy where photojournalism in areas of war and high conflict is highlighted.

* Introduction
* Activities
* Art and Conflict
* Documenting Conflict (linked directly to YouTube)
	+ Conflict, time, and photography
	+ The Berlin Wall and Industrial England
	+ Kurt Schwitter's war time photographs
	+ Traces of illegal migration in Mexico: Mark Ruwedel
	+ Shai Kremer in and Israeli military training stage
	+ Burke and Norfolk: Photographs from the war in Afghanistan
	+ Hrair Sarkissian: Syria's "Execution Squares"
* Challenging the State
	+ Han Haacke: "A Breed Apart" in South Africa
	+ Doris Salcedo's "Shibboleth"
	+ Mounted police and crowd control at Tate Modern
	+ "Immigrant Movement International": Nationalism and Immigration in the gallery.
	+ Wang Peng: Performance as politics in China and beyond
* Creating Contradiction
	+ Michael Rakowitz on Star Wars and Saddam Hussein
	+ Peter Kennard's political phomontages
	+ Personal memory versus political history in Eastern Europe
	+ Mona Hatoum's self-contradictory objects

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Coding sites

Besides Khan Academy and Scratch, there are other sites where you can go to learn coding:

* Code School - coding
* CodeAvengers - coding
* Codecademy - coding
* Code.org - coding
* Codepen.io - coding
* Hackety Hack - coding
* Little Web Hut - coding and graphics programs
* SoloLearn.com - coding
* Treehouse - coding
* W3Schools - coding
AJ

AJ or Tuner King 5 is a member of Khan Academy who very much likes doge.

## Khan Academy Highlights

* He can be found here
* Has over 124 Million points and Tesla
* Has 10 programs with over 100 votes
* Highest rated program has over 400 votes

## Wikia Highlights

* Chat moderator on KAOS
* Has over 8,400 edits on all of Wikia
* Has been on Wikia since June, 2014
* Disabled his Wikia account in early 2017
AC analysis superposition

***AC analysis superposition*** is a video in the Circuit Analysis category/AC Circuit Analysis sub-category of Khan Academy's Electrical Engineering course.

We break a sinusoidal input voltage into two complex exponentials. Using superposition, we can recover the complex output signals and reassemble them into a real sinusoidal output voltage.

**☀ The course content was created by: Willy McAllister**

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Duolingo exercise status bar

While doing exercises on Duolingo, there is a status bar across the top that shows the learner's progress. The bar comes in different colors. As the user gets questions correct, the bar becomes longer moving from left to right. When the user has finished the section, the end of the bar turns into a circle with a picture related to the exercise inside it.
Europe

The British Museum's **Europe** collection covers a vast expanse of time from the earliest times to the present day, including the history of Britain under Roman occupation.

* Ancient Greece
* Ancient Rome
* Medieval era
* Renaissance

Learn more about this on Khan Academy in partner content.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Arhat (Luohan)

Met curator Denise Leidy on ugliness and divinity in **Arhat (Luohan)** dating from China’s Liao dynasty,  c. 1000.

This nearly life-size sculpture and its companion piece are part of a group of about sixteen works that have been known in the West since 1913. They are thought to have come from a cave in Yixian, in Hebei province, and they represent arhats (or luohans, as they are known in China). Arhats were thought to have achieved an advanced (although not perfected) state of spiritual development, and they eventually became recognized as protectors of Buddhism. Both works are justifiably acclaimed as masterpieces of ceramic sculpture, both for their size and for the quality of their glaze, a three-toned or colored glaze known as sancai. The discovery of an ancient kiln in a village near Beijing in 1983 and its subsequent excavation in 1985 yielded much information that could be used to date these extraordinary sculptures. It seems reasonable, therefore, to date the more technically challenging, life-size works slightly later, probably to the late tenth or eleventh century.

View this work on Khan Academy here or on metmuseum.org.

Created by The Metropolitan Museum of Art.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**
Khan Academy

**Khan Academy** is a philanthropically supported education site with a variety of content, such that there is something for anyone between 3 or 4 years old and Betty White. The site came about-like many great things in history - much by accident. Sal Khan was tutoring his niece remotely. Others found his videos and found them useful. Eventually, a decision was made to launch the site.

**☀ All Khan Academy content is available for free at: www.khanacademy.org**