CK-12 Foundation
Ck 12: Algebra: Solve One Step Inequalities: Linear Inequalities
[Free Registration/Login may be required to access all resource tools.] Solve inequalities by isolating the variable and graphing the solution.
Other
Boston Children's Museum: Beyong the Chalkboard: Crater Maker
Children practice experimenting, measuring, isolating variables, and more while making their own little craters.