Geogebra is a free program that I use to create dynamic worksheets to visually enhance mathematical topics.

Complete active Geogebra file online!
You can use every feature that geogebra has to offer without having to download anything.  Have fun!
Unit 2 Expressions & Equations
Solving Simple Two Step Equations
 
Unit 4 Linear Functions
Linear Parameter Changes a & b
Slope Explorer
Unit 6 Linear Systems
System of Equation Visual Solver
System of Inequalities Visual Solver
Unit 9 Quadratic Functions
Quadratic Parameter Changes a & c
X-Intercepts of a Quadratic Function
 
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