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8.10 Equivalent fractions

Lesson

Are you ready?

Can you identify the number and size of equal parts?  

Here is a shape divided into parts, use it to answer the following questions.

  1. This shape has $\editable{}$ equal parts.

  2. If one part was shaded, that shaded part would be $\frac{\editable{}}{\editable{}}$ of the whole.

 

Learn

How can we identify equivalent fractions?  This video will show us.  

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Question 1

Fill in the blank to find an equivalent fraction to $\frac{1}{4}$14:

  1. $\frac{1}{4}=\frac{\editable{}}{8}$14=8

Learn

Here we look at comparing using equivalent fractions. 

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Question 2

We are going to compare the two fractions $\frac{1}{8}$18 and $\frac{1}{4}$14.

  1. Turn $\frac{1}{4}$14 into a fraction in eighths.

  2. We can now compare the two fractions $\frac{1}{8}$18 and $\frac{1}{4}$14.

    Which fraction is larger?

    $\frac{1}{8}$18

    A

    $\frac{1}{4}$14

    B

    The fractions are the same size.

    C

 

Outcomes

3.NF.3

Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.

3.NF.3.b

Recognize and generate simple equivalent fractions, such as 1/2 = 2/4, 4/6 = 2/3. Explain why the fractions are equivalent, by using a visual fraction model, for example.

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