PHET Interactive Simulations: 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!
Sample Learning Goals
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