Interactive
Curated OER

Quadratic Equation Calculator

For Students 11th
In this Algebra II activity, 11th graders use an online quadratic equation solver to find the zeros of a quadratic.  The one page interactive activity provides one worked example and the equation solver. 
Interactive
Other

Interactive Algebra: Graphing Helper for (Y = Mx + B)

For Students 9th - 10th Standards
Enter the slope and y-intercept of any line and it will be graphed for you. This site is great for becoming familiar with the concept of graphing and for checking your own graphs. Requires Java.
Interactive
Concord Consortium

Seeing Math: Linear Transformer

For Students 9th - 10th Standards
Transformations of linear functions, with links between the symbolic and graphic forms, can be powerful tools to help students overcome conceptual hurdles in algebra.