few_shots: 
Example:
Concept/skill: 
Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.
Grade 4 expectations in this domain are limited to fractions with denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100.

Problem/activity:
Task
Cruz and Erica were both getting ready for soccer.
Cruz ran 1 lap around the school.
Erica ran 3 laps around the playground.
Erica said,
I ran more laps, so I ran farther.
Cruz said,
4 laps around the school is 1 mile, but it takes 12 laps around the playground to go 1 mile. My laps are much longer, so I ran farther.
Who is right? Draw a picture to help you explain your answer.


Answer: 
Yes. This task asks students to compare two fractions that are equal. The students need to explain why the two fractions are equal by drawing a picture, which involves using visual fraction models.

Now, assess whether the following problem or activity is 'aligned' with the given Common Core standard in Mathematics.

shot_info: im_task_000212_pos_0

4
standard_description: Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations. For example, decide whether the words in a chapter of a seventh-grade science book are generally longer than the words in a chapter of a fourth-grade science book.
problem_activity: Problem 1
a.   How many do you see? How do you see them?
[IMG]
b.   Instead of writing
$$10 \times 10$$
, we can write
$$10^2$$
, which we read “ten to the
power
of two.” The two is the
exponent
and tells us how many times we multiply 10 by itself. How would you represent the number of the smallest spokes in the image above as a power of 10?
Problem 2
a.   Write each of the following as a product of tens and in standard form.
$$10^4$$
$$10^6$$
b.   Write each of the following as a power of 10.
10 × 10 × 10 × 10 × 10
1,000,000,000
Problem 3
a.   Solve.
10 × 10,000 = ______
1,000 × 1,000 = ______
1,000,000 × 100 = ______
b.   How were powers of 10 useful in solving Part (a)?


aligns: no