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31 Great Counting Books for Kids ~ Includes info about each book. (Free listing from No Time for Flashcards.)
29 ways to make math more fun for your kids - seriously adorable activities kids will LOVE doing. I like the water balloon and Lego game.
Count and Sort Posting Box Maths Game - The Imagination Tree. Size and rotation discrimination are tough for a couple of my students. This looks like a motivating task.
Preschool Center: Clothespin cards for counting. Could easily be adapted to word work, alphabet recognition, etc.