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8.05 Fraction bars 2

Lesson

Are you ready?

Can you find the number of equal parts a shape is divided up into?

We are going to represent the fraction $\frac{1}{2}$12 on a fraction bar diagram.

  1. How many parts do we divide the bar up into?

    We divide the bar into $\editable{}$ equal sized parts.

  2. Here is the fraction bar split into two parts.

    Which of the following represents $\frac{1}{2}$12 on the fraction bar?

    A
    B

Learn

This video looks at fraction bars for fractions with denominators up to tenths.  

Apply

Which of the following shows $\frac{3}{8}$38 on a fraction bar?

  1. A

    B

    C

 

Remember!

When writing fractions using fraction bars:

  • The denominator (bottom number) shows the number of equal parts the whole is divided into.
  • The numerator (top number) shows how many parts are shaded, so shows the value of the fraction.

Outcomes

3.NF.A.1

Understand a unit fraction, 1/b, as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a non-unit fraction, n/b, as the quantity formed by n parts of size 1/b. For example, 3/4 represents a quantity formed by 3 parts of size 1/4.

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