I wouldn't focus on "math" so much as logic at that age. This link may be useful to you - http://www.scholastic.com/teachers/article/ages-stages-helping-childre

I wouldn't focus on "math" so much as logic at that age. This link may be useful to you - http://www.scholastic.com/teachers/article/ages-stages-helping-children-develop-logic-reasoning-skills http://www.scholastic.com/teachers/article/ages-stages-helpi... (my source: my wife, who is a Reading Corps member that also assists in teaching math to 4 year olds)