About Build a Fraction
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!
How to play Build a Fraction
Everything is hands-on: drag, click and experiment — the simulation reacts instantly. Build fractions from shapes and numbers to earn stars in this fractions game or explore in the Fractions Lab.
Questions & answers
- What is Build a Fraction?
- Build a Fraction is a free interactive simulation from PhET Interactive Simulations (University of Colorado Boulder) that you can play right in your browser on crumble.lol — no downloads and no sign-up. 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.
- What can kids learn from Build a Fraction?
- It helps kids explore: 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.
- What age is Build a Fraction good for?
- It is designed for elementary school (roughly ages 5–10) up to middle school (roughly ages 10–14), and curious kids outside that range can absolutely enjoy poking around it too.
- Is Build a Fraction free to play?
- Yes — Build a Fraction is completely free on crumble.lol and runs fully in your browser on computers and tablets.