K-12 Algebra

Algebra Tiles
- Practice constructing rectangles
- Easy Version - all coefficients always positive
- Hard Version - coefficients can be positive or negative
Cartesian Coordinate System
Slope
- Slope Applet - by itself
- Slope - with explanation
- Slope - extra stuff added that makes applet more messy
- Parallel/Perpendicular Lines - as related to slope
Pythagorean Theorem

The Science and Mathematics Initiative for Learning Enhancement (SMILE) at the Illinois Institute of Technology contains ~1000 individual lessons in Biology, Chemistry, Mathematics, and Physics written by teachers and for teachers.