About Equality Explorer
Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance. Discover the rules for keeping it balanced. Collect stars by playing the game!
How to play Equality Explorer
Everything is hands-on: drag, click and experiment — the simulation reacts instantly. Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance.
Questions & answers
- What is Equality Explorer?
- Equality Explorer 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. Explore what it means for a mathematical statement to be balanced or unbalanced by interacting with objects on a balance. Discover the rules for keeping it balanced.
- What can kids learn from Equality Explorer?
- It helps kids explore: solve and manipulate algebraic equations by applying properties of real numbers (in particular, the inverse properties of addition and multiplication) and properties of equality solve and manipulate algebraic equations by substituting different values for a variable use a balance model to solve an equation for an unknown, and justify your strategies for solving solve an equation using only universal operations.
- What age is Equality Explorer good for?
- It is designed for middle school (roughly ages 10–14) up to high school, and curious kids outside that range can absolutely enjoy poking around it too.
- Is Equality Explorer free to play?
- Yes — Equality Explorer is completely free on crumble.lol and runs fully in your browser on computers and tablets.