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PEAZIT Aha card

Fractions: how big are the pieces, and how many?

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The denominator underneath tells you how many equal parts make one whole. The numerator above tells you how many of those parts you take.

Split the same chocolate bar into four equal pieces.
Whole divided intoSelectedFraction
4 equal parts1 part1/4
4 equal parts3 parts3/4

One worked example

  1. 1/4One of four equal parts is one quarter.
  2. 3 × 1/4 = 3/4Three quarters means three pieces, each of size 1/4.

Watch out: The pieces must be equal in size. Counting three pieces is insufficient if they have different sizes.

Goal, prerequisites and card origin

What you will learn: Distinguish the size of a part from the number of parts.

What you need first: Counting objects and sharing a whole into equal parts.

An original PEAZIT working card. Independent expert review and effectiveness testing have not yet taken place. · v1

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The denominator underneath tells you how many equal parts make one whole. The numerator above tells you how many of those parts you take.

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