Graphing Functions
This site provides a mechanism for graphing any type of function.  The site allows you to enter the function, number of points, minimum and maximum number.  

Multiplying Polynomials
Lessons include color-coding to help students see steps.  FOIL lesson includes “box” method as a visual aid.  Practices, a quiz, and word problems—all with answers-- are also included.

Solving Equations
This source will help you understand how to properly solve linear equations. It is filled with websites that will explain the process step by step; it has plenty of good examples to view, and interactive questions to test your knowledge.

Congruent vs. Similar Triangles
This websites explains the difference between similar and congruent triangles. There are examples explaining the difference. Also, the site explains the congruence and similarity theorems for triangles. 

Equation of a Circle
This site gives a method for the development of the equation for a circle in the xy-plane.   It also has an interactive circle maker that allow you to move the center and radius around the xy plane and the computer automatically changes the equation.

Four Triangle Congruent Conjectures
Really cool website.  Lets you build congruent triangles.  This interactive websites allows you to create congruent triangles. Your goal is to create two triangles (red and blue) that are congruent to each other. Have fun and good luck!

Pythagorean Theorem
Demonstrate the Pythagorean Theorem by manipulating the blocks.  This simulator uses areas to “prove” the Pythagorean Theorem with several different puzzles.