Grade 1: Mathematics

http://www.harcourtschool.com/activity/adding_bricks_k/
In this game, the children are shown 2 sets of bricks to represent an addition problem. Then the addition problem is shown, and the children solve the problem.

http://funschool.kaboose.com/formula-fusion/games/game_addition_attack.html
In this math game, the children are given addition problems that they have to solve under a time limit. They shoot the space ship that contains the correct answer.

http://www.harcourtschool.com/glossary/math2/index1.html
This is a website that gives children the definition of many math words and terms. The definitions are explained through the use of pictures.