Build a Fraction - Zlomky | Equivalent Fractions | Mixed Numbers - PhET Interactive Simulations

Build a Fraction

Build a Fraction simulation


  • Zlomky
  • Equivalent Fractions
  • Mixed Numbers

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

  • 3.NF.A.1

  • 3.G.A.2

  • 2.G.A.3

  • 1.G.A.3

System Requirements


HTML5 simulations can run on iPads, Chromebooks, PC, Mac, and Linux systems.
See full HTML5 system requirements

Version 1.0.14