# Build a Fraction

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Use this HTML code to display a screenshot with the words "Click to Run". Fractions Equivalent Fractions Mixed Numbers PhET is supported by and educators like you.
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### Topics

• Fractions
• Equivalent Fractions
• Mixed Numbers

### Description

Build fractions from shapes and numbers to earn stars in this fractions game or explore in the Fractions Lab. Challenge yourself on any level you like. Try to collect lots of stars!

### Sample Learning Goals

• Build equivalent fractions using numbers and pictures
• Compare fractions using numbers and patterns
• Recognize equivalent simplified and unsimplified fractions
• Note: Build A Fraction expands on ideas from the Fraction Intro and Fraction Matcher sims or can be used as a stand-alone tool

### Standards Alignment

#### Common Core - Math

1.G.A.3
Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.
2.G.A.2
Partition a rectangle into rows and columns of same-size squares and count to find the total number of them.
2.G.A.3
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
3.G.A.2
Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.
3.NF.A.1
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
3.NF.A.2
Understand a fraction as a number on the number line; represent fractions on a number line diagram.
3.NF.A.2a
Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.
Version 1.02

### Teacher-Submitted Activities

Equivalent Fractions Day 3 of 3 Meaghan Hixson K-5 Guided Mathematics
Fractions 3 Day Unit Meaghan Hixson K-5 Guided Mathematics
Working with Fractions Deborah Gaff K-5 Lab
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Kesirler - 3 Derslik Öğrenci Çalışması Sebnem Atabas (Translated from Fraction Unit Student Sheet by Meaghan Hixson) MS Guided Mathematics
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Building Fractions Jillian Gutman MS
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SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017) Diana López MS
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PREPARATORIA: Alineación de PhET con programas de la DGB México (2017) Diana López UG-Intro
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PRIMARIA: Alineación con programas de la SEP México (2011 y 2017) Diana López K-5
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Chemistry
Physics
Mathematics
Astronomy
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