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This website is K-12 with algebra tiles, fractions and interactive games on the computer. It also has a "grapher" that graphs up to 3 functions. I use it to find x and y-intercepts of lines or parabolas

Beyond simple math and grouping (like "(x+2)(x-4)"), there are some functions you can use as well. Look below to see them all. They are mostly standard functions written as you might expect. You can also use "pi" and "e" as their respective constants.

Using a balance strategy to solve equations. Great tool for teaching properties of equality when solving equations. Can even make your own equations

This tool enables K-6 students to build visual models of word problems. There are hundreds of built-in math problems covering thirty-six different categories. Videos explain how to model each problem type. The full screen feature makes this application compatible with interactive white boards.

This is an incredible collection!!!

A take off of the Khan Academy. 

"This site provides over 2,600 free mini-lessons and example videos with no ads. The videos are organized by course and topic."

Gracias esto buscaba