Pre-Kinder to Year 2
Algebra Index

Pre-Algebra
Colorable Number Chart
Compare Numbers to 10
Compare Numbers to 100
Comparing Numbers
Definition of Number Line
Definition of Number Pattern
Introduction to Algebra
Introduction to Inequalities
Make your own Number Patterns
Pattern Match - Colors
Pattern Match - Numbers
Pattern Match - Shapes
Patterns
Scrolling Number Line
Shapes Freeplay

 

And there is also the Illustrated Math Dictionary, Worksheets, Games, Puzzles and Forum.

 

Index by Year and Subject