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Stop, Look, Listen Lesson 7 of 10 Objective: Students will be able to understand and explain the importance of effective listening through obtaining information, evaluating the task and communicating the results. Gather students on the rug using a preferred classroom management technique. I like to use my “Stop, look, ...
Practice the worksheet on yesterday, today and tomorrow, the questions are based on the sequence of the week-days, their names and order. We know, the present day is today, the day before today is yesterday and the day after today is tomorrow. 1. How many days are there in a week? 2. Name all the days of a week. 3. Whi...
Dragonflies have been around for 300 million years, making them one of the oldest species of insects in the world. Dragonflies have been so successful over the years that the only difference between modern and ancient dragonflies is size. One of the secrets to their success is how they mature. Dragonflies have three st...
The math materials, like all other classroom materials, focus first on the concrete and then move toward abstraction. Students first focus on the numbers one to ten, mastering quantity, then the symbol and finally associating the two. A complete comprehension of this first stage is essential as it lays a solid foundati...
Equal — the same in number, amount, degree, rank or quality. Not changing, the same for every person. Equality — the state of being equal in political, economy and social rights. Equity — fairness or justice in the way people are treated. (Merriam-Webster) I watched with great interest the summer Olympic Games in Rio d...
Graph the parabola y = (x + 4)2 - 4 Notice that this is the vertex form of the equation of a parabola which is generally expressed as follows: y = a(x - h)2 + k , where (h, k) is the vertex of the parabola and 'a' determines whether the parabola opens upward (if a>0, or positive) or downwards (if a<0, or negative). For...
Article 1 Section 2 of the Constitution affords Congress the power to apportion representatives “among the several States…according to their respective numbers.” For the House of Representatives, representation is based on population, so a given state can gain or lose seats depending on its population growth rate. Howe...
(Hover your mouse over bolded terms to see their definition.) Captain Karl Fredrick Darensbourg, a German-speaking Swedish soldier, left France on the Portefaix on March 7, 1721, bringing with him three hundred German-speaking Swiss and Alsatian colonists bound for Louisiana from the Alsace- Lorraine area. When they ar...
Social Emotional & Behavioural Difficulties (SEBD) The term Social Emotional Behavioural Difficulties (SEBD) covers a wide range of emotional problems. It is an umbrella term that describes a range of complex difficulties including emotional difficulties and complex mental health issues. These can include adjustment di...
After the Treaty of Waitangi was signed in February 1840 at Waitangi, across the bay, relations between the Ngāpuhi and Pākehā (used by the Ngāpuhi to mean British European) began to deteriorate. Hone Heke, a local Māori chief, identified the flagstaff flying the Union Jack above the bay at Kororareka as the symbolic r...
The statement “Complex experiments, such as ALICE, generate huge amount of data that need to be processed and analyzed” cannot be characterized as revelatory. But, it can trigger an interesting question, namely “How does this processing and analysis work?”. This brings up more questions such as: Does each physicist hav...
Some 200 million years ago half of all life on Earth went extinct, thus providing a window of opportunity for the dinosaurs to evolve in now unoccupied niches and dominate the planet for the next 135 million years. Curiously enough, after the dinosaurs were at their own term wiped out by a calamity – presumably at the ...
Researchers at the University of Wisconsin-Madison were able to probe deeper into smokers' lungs by tracking the movement in the respiratory organs of a harmless gas known as helium. Helium can be inhaled and visually detected via the widely used diagnostic technique known as magnetic resonance imaging (MRI), which pro...
Proteins contain hundreds to thousands of individual amino acids that are linked together in a chain and then folded into a complex shape. Each protein structure is made up of approximately 21 different amino acids in different combinations.Continue Reading There are approximately twenty different amino acids that natu...
Is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material. 3D printers are generally faster, more affordable and easier to use than other additive manufacturing technologies. 3D printers offer product developers the ability to print parts and...
Design of the Experiment Planaria flatworms can be found in fresh water ponds especially during spring. The teacher can get some flatworms in these ponds for the experiment. There are also shops that sell biological supplies including planarian flatworms. The teacher can buy some flatworms in these shops. The flatworms...
The reduced Planck's constant, or h-bar as it's commonly known, is a modified form of the equation that describes the quantization of angular momentum, according to Encyclopaedia Britannica. Angular momentum explains the rotary inertia of an object in motion, such as the Earth on its axis as well as its orbit around th...
\|LOCATION:\|\|Western Great Lakes around Lake Superior.\| The Ojibwe, commonly known as Chippewa, were woodland peoples who generally remained living in one settlement, unless wildlife became scarce. Birch bark was utilised to make wigwams, canoes and containers. The Ojibwe were farmers who grew corn, beans, pumpkins, and...
Kindergarten Emphasized Skills Counting and Cardinality - Know number names and count sequence. - Count to tell the number of objects. - Compare numbers. Operations and Algebraic Thinking - Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. - Number and Op...
Tutorial 10 Shape the Virtual Habitat In this tutorial you use the Habitat Board to make alterations or full revisions to the virtual spaces where your lesson or unit will take place. A Note About the Term "Virtual" The definition and placing of "Virtual Habitat" in the Design / Engage Kit is deliberate. We deliberatel...
Copyright © University of Cambridge. All rights reserved. 'Coordinate Patterns' printed from http://nrich.maths.org/ Why do this problem? encourages the development of team-building skills such as helping others to do things for themselves, responding to the needs of others, encouraging everbody to help each other and ...
Levers at their most basic are a rigid beam attached to a fulcrum, or pivot point, and are very prevalent in everyday life. For example, doors and scissors as well as far more complicated things such as hydraulic lifts and engines all incorporate various types of levers.Continue Reading Examples of levers that are enco...
Historians trace the origins of Valentine's Day to the ancient Roman feast of Lupercalia, which was celebrated each year between Feb. 13 and Feb. 15. During the feast, men sacrificed a dog and a goat and then used the skins to strike women who believed the whippings would make them fertile. As time went on, Christian l...
ASSOCIATION SPOTLIGHT: SICKLE CELL DISEASE Sickle cell disease is an inherited blood disorder that affects red blood cells and is not uncommon in the African-American community. One of the questions that is on the current NCHSAA pre-participation medical form has to do with sickle cell disease, so it is important that ...
A major impact of the Ancient Greeks and Romans on Western Civilization can be seen in the United States and many other Western governments in the democratic process. The democratic process in Western civilizations is a direct result of the original democracy, Athenian democracy.Continue Reading Democracy comes from th...
Gaze upwards on a dark night, and you will see the ‘Milky Way’, a glowing ribbon made up of many individual stars. This is our first clue to the fact that that stars are not uniformly distributed throughout space, but clustered together to form galaxies. Galaxies can vary in size between a hundred thousand and three th...
Beach erosion, often referred to as coastal erosion, occurs when the area’s sand is washed into the ocean. Beach erosion is a constant process, and the persistence of a beach depends upon local rivers and streams to transport more sand to the area. If the area loses more sand than it gains, it begins to shrink over tim...
In this article we will learn what is Hall Effect and how Hall Effect Sensors work. You can watch the following video or read the written tutorial below. The Hall Effect is the most common method of measuring magnetic field and the Hall Effect sensors are very popular and have many contemporary applications. For exampl...
Back in the 1970’s I taught a high school social studies course called “War and Peace Studies.” A recent email exchange reminded me of a simplified version of the Prisoner’s Dilemma that I created for use in the classroom. The Prisoner’s Dilemma is a fundamental exercise in game theory and serves as a great catalyst fo...
Washington, September 27 : A new study has looked at the hypothetical scenario of what legacy humans will leave in the rocks 100 million years hence. Conducted by Jan Zalasiewicz, a lecturer in geology at the University of Leicester, UK, the study takes the perspective of alien explorers arriving on earth - their geolo...
Two regions of radiation encircle the Earth. They’re called the Van Allen belts, and they are a pair of dynamic regions of trapped radiation, separated by a void and held in place by the Earth's magnetic field. They protect the planet from the radiation of space and the effects of solar weather. We’ve known about these...
It is the debate that has raged ever since the discovery of dinosaurs in the 19th century - just how were they wiped off the face of the planet? The most popular theory since the 1980s has been that they died after an asteroid strike, but in recent years some scientists have speculated that volcanic eruptions in the De...
By definition all atoms have a neutral charge. This means that they have the same number of protons and electrons. Protons are positively charged and electrons are negatively charged. An equal number of positives and negatives will have a net charge of zero. Each element in the periodic table has its own unique atomic ...
Students will conduct field research of a historical site in order to discover a more complete understanding of a time period, as well as a fuller appreciation of history. Tools And Materials Students will need copies of a scavenger hunt based upon their previous research. (See previous activity.) - Before visiting the...
Problem 1. (a) First, you likely need to draw a picture of the two bounding surfaces (the part of the sphere and the cone). From this picture one can see that the sphere is “on top” and the cone is “on the bottom.” This lets us describe the solid region using the variable first. The solid region can be described by: Th...
Turbidites are sedimentary rocks caused by the lithification of turbidite sediments, that is, sediments deposited by turbidity currents. In this article we shall review what is known of their sedimentology, and discuss how we know their mode of deposition. When a denser fluid flows through a lighter one, the difference...
NASA: Saturn moon Enceladus is able to host life – it’s time for a new mission Ever since studies started suggesting that chemical reactions between water and rock on Saturn’s moon Enceladus could provide enough energy in the water to feed microbial life, scientists have been searching for proof that the right sort of ...
Life has its shapes, and depends on all kinds of architecture. It needs a skeleton on which to hang. Blood vessels in which to flow. A brain to house its thoughts. A heart to give it a beat. On a far smaller scale, it needs cells to accommodate all the various components without which there would be no life in the firs...
The Manila galleon trade is probably more significant in the history of the world as a whole than it is in the history of the United States, but it does have significance for both. The Manila galleon trade contributed to what was arguably the first truly globalized trade network in history. The trade was significant fo...
One of the strongest points of R in the opinion of many are the various features for creating graphs and other visualizations of data. In thia post, we begin to look at using the various visualization features of R. Specifically, we are going to do the following - Using data in R to display graph - Add text to a graph ...
Anatomical Terms of Movement Anatomical terms of movement are used to describe the actions of muscles on the skeleton. Muscles contract to produce movement at joints, and the subsequent movements can be precisely described using the terminology below. As for anatomical terms of location, the terms used assume that the ...
The word ‘secular’ in dictionary refers to things which are not religious or spiritual. The concept of ‘secular’ in fact was first used in Europe where the church had complete control over all types of properties and nobody could use property without the consent of the church. Some intellectuals raised their voice agai...
Grouping or Sharing? Lesson 5 of 13 Objective: Students will be able to identify a division word problem as either sharing or grouping and communicate their reasoning. Today I want to see if my students are able to decipher between the two types of dividing. Working with the CCSS has led me to understand that children ...
The first day of autumn descended across the northern hemisphere on 22 September, with the 2012 autumnal equinox. The day heralded the end of summer... one of the hottest on record. The UK Met Office reports the south-west and northern parts of England (and southern Wales) all enjoyed a significant amount of rain and s...
Sleep deprivation–and its effects, particularly on teens–has become a crucial area of research in the medical field. Sleep deprivation is the condition of not having enough sleep, which can be either acute or chronic. The majority of high school students are, to varying extents, affected by sleep deprivation. On averag...
As an object moves through a gas, the gas molecules are deflected around the object. If the speed of the object is much less than the speed of sound of the gas, the density of the gas remains constant and the flow of gas can be described by conserving in the flow. speed of the object increases towards the speed of soun...
The Renaissance, or rebirth, was a revival movement which took place in Medieval Europe between the fourteenth and sixteenth centuries. Rome became a dominant force in this movement, partly because the Renaissance originated in Italy. All around the Renaissance artists and intellectuals were visible reminders of Rome's...
No ecosystem is entirely free of sediment. In aquatic environments, its presence can threaten the health of ecosystems. Sediment can cloud the water, which in turn can negatively impact the plants and animals of these places. Also, depending upon the type of sediment, additional issues can also occur. It can have both ...
can help pupils extend their spatial understanding related to number sense. It can be used to acquaint pupils with the attributes of the cuisenaire rods. A time to play with the rods if pupils are not used to using them would be essential. If you do not have access to the rods then pupils could have some time with the ...
Shelling the ridge, seen from a French trench, 1915. Private collection. All rights reserved. A year before the Battle of Verdun began, bloody fighting took place some twenty kilometres to the south-east of the town at Les Éparges, a ridge less than 2 kilometres in length in the Meuse Hills that was the scene of the fi...
The Freedom Riders were civil rights activists who rode interstate buses into the segregated southern United States to test the United States Supreme Court decisions Boynton v. Virginia (1960) and Irene Morgan v. Commonwealth of Virginia (1946). The first Freedom Ride left Washington, D.C., on May 4, 1961, and was sche...
Ideas and Content This segment is about the ideas behind art and writing. Artists and writers share their strategies for identifying and developing ideas for their work. Time: 45-50 minute period - Students will create a list of ideas and topics for future pieces of writing and art. - Students will use two techniques t...
With the passage of the FAIR Education Act, we would like to offer some resources, lesson plans, and ideas for incorporating these standards into the classroom. - FAIR Education Act Website. Offers lessons based on grade level and links to additional resources. - The Role of Gay Men and Women in the Civil Rights Moveme...
Discrete Mathematics for Computer Science/Proof A proof is a sequence of logical deductions, based on accepted assumptions and previously proven statements and verifying that a statement is true. What constitutes a proof may vary, depending on the field. In mathematics, a formal proof of a proposition is a chain of log...
The meaning of a word can often be gleaned from clues in the surrounding context. What comes before and after a new word can reveal its meaning, structure, and use. These strategies can help students meet Common Core Standards related to Vocabulary Acquisition and Use. Help struggling readers to draw upon multiple appr...
Our fourth grade artists had a COLOR THEORY lesson on the complementary colors. COMPLEMENTARY COLORS are directly opposite each other on the color wheel. These opposite colors create CONTRAST in an artwork. If some of a colors complement is added to it, the INTENSITY of that color will be duller. The artists began by f...
Robert Fulton, best known for his work in steamboat technology, was born in Little Britain, Pennsylvania, in 1765. As a child, Fulton enjoyed building mechanical devices, taking on such projects as rockets and a hand-propelled paddle wheel boat. His interest turned to art as he matured, and by the age of seventeen, Ful...
The Earth, Moon, and Sun By James Kregenow Textbook Key Concepts: How does Earth move in Space? Earth moves through space in two ways: Rotation and Revolution. The spinning of Earth on its axis is called rotation. Earth completes one full rotation about every 24 hours. It is day on the side of Earth that is facing the ...
Competence and jurisdiction, in law, the authority of a court to deal with specific matters. Competence refers to the legal “ability” of a court to exert jurisdiction over a person or a “thing” (property) that is the subject of a suit. Jurisdiction, that which a competent court may exert, is the power to hear and deter...
Welcome to our final installment of The World Through Sound. Last time, we learned about linearity, non-linearity, and how linearization allows scientists to treat complicated systems like much simpler analogs through approximation. In this article, we will explore the concept of acoustic absorption and how sound can t...
The Croatian language has a long history – it is considered to have been born in the 9th Century, with the establishment of Old Church Slavonic as the official liturgy language. The first written documents in Croatian can date back to the 11th Century, the most important of them being the Baška tablet, which is written...
It is commonplace that technologies are changing the world we live in. Roughly every two decades, Earth becomes almost a brand new place in terms of technological wonders becoming routine, and revolutionary ideas settling as solid scientific theories. However, we might not be aware of the extent to which the world is c...
Celsius is a familiar name to much of the world since it represents the mostwidely accepted scale of temperature. It is ironic that its inventor, AndersCelsius, the inventor of the Celsius scale, was primarily an astronomer and did not conceive of his temperature scale until shortly before his death. The son of an astr...
These two worksheets help to guide students through the biography writing process. The first worksheet helps to organize their questions for their partner and record their answers. A whole-class discussion about biographies and the types of questions that authors ask before writing works really well before having stude...
England hoped to buy unrefined materials. Tobacco, indigo, ores, grain, wool, cotton, and sugar. These materials were abundant in the colonies, and highly sought after in England. In England they used tobacco to make cigars. Indigo was used to dye cloth blue. Ores were refined into metals for smithing. Grain was made i...
The CoRoT satellite has discovered a planet only twice as large as the Earth orbiting a star slightly smaller than the Sun. It is the smallest extrasolar planet (planet outside our solar system) whose radius has ever been measured. The planetâ€™s composition is not yet certain, but it is probably made predominantly of ...
Watch this awesome fluid dynamics lab demo, and then stick around for the science: How fluids flow Liquid flows are described in two regimes, laminar and turbulent. Laminar flow is a smooth, constant fluid motion, as if the fluid molecules were marching in-pace, single file. Turbulent flow is dominated by chaos, produc...
The Dead Sea is the lowest water in the world, and about 400 meters below sea level on average. The Dead Sea is located between Israel and Jordan, and is an inland salt lake. Jordan injects from the north. The Dead Sea is 80 kilometers long and 18 km wide, the lake surface area of 1020 square kilometers, the depth of 4...
Indo-Europeans are representatives of a language family now widely distributed all over the world, with primary concentration in Europe, the Middle East, and northern Asia. Sir William Jones, who emphasized the similarity of Sanskrit, Greek, Latin, Celtic, and the German language, introduced the term Indo-European in 1...
Thalassemia is an inherited blood disorder in which the body makes an abnormal form of hemoglobin. Hemoglobin is the protein molecule in red blood cells that carries oxygen. The disorder results in excessive destruction of red blood cells, which leads to anemia. Anemia is a condition in which your body doesn’t have eno...
Fiction or nonfiction? Real or make-believe? Fact or fantasy? These are all phrases for an important early learning concept: Could this really happen? And what better time to encourage child thought about make-believe events versus real-life occurrences than Groundhog Day! You can introduce your child (or children) to ...
1. Served as the 15th President of the United States (1857–61), James Buchanan took office in 1857 by the time which the country was at the brink of a Civil War landing him among the least popular presidents` list. He was born on April 23, 1791, in Cove Gap, Pennsylvania. He was born on April 23, 1791, in Cove Gap, Pen...
When metamorphic rocks undergo pressure they are changed, but how are they changed? Do they become fragments of rocks? Doesn't that mean that the difference between sedimentary rocks and metamorphic rocks (when talking about fragment rocks) is that sedimentary rocks undergo weathering, which makes them fragments and me...
What was the most important date in post-war European history? Some historians would say all European history as it changed Europe for ever. Who made the real turning point where his government created a democratic solution for the whole Continent, its politics, economics and its defence? Robert Schuman in 1948! The di...
Students connect polynomial arithmetic to computations with whole numbers and integers. Students learn that the arithmetic of rational expressions is governed by the same rules as the arithmetic of rational numbers. This unit helps students see connections between solutions to polynomial equations, zeros of polynomials...
Reading time ( words) Trillions of sensors are in our future, and they will need energy. Batteries are routinely used to power tiny devices, but there are other options. Piezoelectricity, the technology that converts mechanical energy into electricity, is gaining attention these days because it can scavenge energy from...
Making Sedimentary Rocks! \|Students make a model of sedimentary rock layers to understand how rocks form layers and represent ancient environments.\|\|Materials: For each group: \|Windows to the Universe staff member Lisa Gardiner based this activity on one by teacher/naturalist Edith Sisson (author of Nature with Childre...
The first people to inhabit Britain, the ones responsible for such megalith monuments as Stonehenge, arrived between 35,000-10,000 years ago. From 1,500-500 BC, Celtic tribes from the continent came to settle in Britain and began mixing with the indigenous groups that were already there. In an attempt to expand their e...
Ever since it achieved unification in 1871, Germany craved colonies as a matter of national pride. But by the late nineteenth century, most of the ‘uncivilised world’ was already carved up by established European powers. In an eleventh-hour effort, the German Empire acquired a few scraps of Africa and Asia – mainly wil...
The knee is the largest joint in the body. It is a specialised hinge joint made up of four main things: bone, cartilage, ligaments and tendons. The main movement that occurs in the knee joint is flexion and extension. It does however allow for a small amount of rotation and gliding on the surfaces. The patella is the s...
First grade offers an amazing year of growth and knowledge! Students learn a great deal as they become better readers, writers, and thinkers, gaining knowledge and skills in Language Arts, Mathematics, Science, and Social Studies. They also participate daily in one of the Encore classes of Physical Education, Music, Ar...
- 1 Definition - 2 Details - 3 Supplementary - 4 Further reading - 5 Notes The term disaccharide etymologically means two saccharides. A saccharide refers to the unit structure of carbohydrates. Thus, a disaccharide is a carbohydrate comprised of two saccharides (or two monosaccharide units). The term sugar can refer t...
Isocrates, an ancient Greek rhetorician, was one of the ten Attic orators. In his time, he was probably the most influential rhetorician in Greece and made many contributions to rhetoric and education through his teaching and written works. Unlike most rhetoric schools of the times which were taught by itinerant sophis...
Harriet Tubman escapes slavery to Philadelphia. Tubman made use of the network known as the Underground Railroad. This informal, but well-organized, system was composed of free and enslaved blacks, white abolitionists, and other activists. Most prominent among the latter in Maryland at the time were members of the Reli...
An in-depth look at how plants respond to climate change shows mixed results for the phenomenon of "demographic compensation" as a way for plants to avoid severe population declines. Demographic compensation has served as a possible explanation for the survival of plants that haven't shifted geographic ranges in tandem...
There are a variety of algae species occurring in different habitats in the world such as fresh water, marine, desert sand and snow. These photosynthetic organisms are vital since aquatic animals feed on the organic matter they produce. Algae also take up excess nutrients such as phosphate, ammonia and nitrate, which c...
What is a semicolon? A semicolon, the hybrid between a colon and a comma, is often considered one of the more pompous punctuation marks. In reality, it gets a bad rap just because few people know how and when to use a semicolon. The semicolon is used to indicate a pause, usually between two main clauses, that needs to ...
While analyzing samples from carbon-rich meteorites with minerals that indicated they had experienced high temperatures, scientists found amino acids, which gives support to the theory that meteorites and comets assisted the origin of life. Creating some of life’s building blocks in space may be a bit like making a san...
Sea level rise — resulting in the flooding and eventual disappearance of land — is one of the most well-known and serious problems facing humans as a result of climate change. Low-lying areas around the world are all at risk. By the end of this century, land currently home to 200 million people will likely be permanent...
Literacy is both an academic and a life skill. The main elements of literacy are: reading, writing and oracy (speaking and listening). In order to encourage our pupils to achieve in literacy we deliver a curriculum which is bespoke to the individual needs, abilities and potential of all our students. In order to ensure...
Grade Level: Elementary school Time Required: 45 minutes Expendable Cost/Group: US $0.40 Group Size: 2 Subject Areas: Chemistry, Physical Science, Problem Solving, Reasoning and Proof, Science and Technology Bolded words are vocabulary and concepts to highlight with students during the activity. Who has heard of chroma...
The “digital divide” was a term originally coined in the early 2000s to describe the “have” and “have-nots” of computers and mobile technology. There was great concern that low-income children would be left behind because of their lack of technology in the home. In the United States, the middle-class predominantly whit...
Language skills are a necessity and a right for EVERYONE – that is one of the main messages of the European Day of Languages. The overall objectives are to raise awareness of: - Europe’s rich linguistic diversity, which must be preserved and enhanced; - the need to diversify the range of languages people learn (to incl...
Once upon a time, there was a man named Joseph who liked to make maps. Joseph was born and educated in France. He was a talented young man who was good at math and science. When he finished his schooling, he became an astronomer in Paris. Joseph’s life was a fine one, full of prestige and friends. All did not remain we...
Tritium is the only naturally-occurring radioisotope of hydrogen. Its atomic number is naturally 1 which means there is 1 proton and 1 electron in the atomic structure. Unlike the hydrogen nucleus and deuterium nucleus, tritium has 2 neutrons in the nucleus. Tritium is naturally-occurring, but it is extremely rare. Tri...
Facts and Information for Educators About Ebola As we continue to hear the recent news about Ebola — a third case in Texas and the continuation of the outbreak in West Africa — we all are becoming increasingly concerned. And, as the situation continues to unfold, educators have many questions about their own safety and...
Centrifuges are widely used in chemical, petroleum, food, pharmaceutical, mineral processing, coal, water treatment and shipbuilding sectors. In ancient China, people used one end of a rope to hold a clay pot, and held the other end of the rope, rotating the pottery jar, and generating centrifugal force to squeeze out ...
What is a constitution? This film was made by International IDEA, to explain the importance of constitutions, and the role they play in underpinning the state. A constitution provides rules about how the country is run. It ensures that the state’s power is dispersed between different bodies and individuals, and that ci...
Listen to this post In principle, any substance whose properties visibly change with temperature can be used to measure temperature. We could have used a material that changes color when subjected to heat. One could discern that the temperature is high when the material would radiate hues of blue and that the temperatu...
In 1846 – as the Mexican-American War brought U.S. troops into conflict with Santa Ana’s forces – the Mexican province of Alta California found itself drawn into the political storm. Caught between Mexico’s mercantilism and the United States’ “Manifest Destiny,” Californians questioned their future. Would it be better ...

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