I could totally do this with money-- dollars on a pumpkin then popsicle sticks with bills and coins that add up to the amount. Addition/subtraction sorting - child needs to determine which sticks add up to the number on the bucket.

BOOK LIST - Math in Children's Literature - - A huge list of books that can be integrated into math lessons! The list is even divided by math topic.

Corkboard Connections: Super Math Centers Link Up; Has links to math center ideas.

Ultimate Guide to Hands-On Math for and Grade featured at Creekside Learning. This is a collection of awesome, meaningful Math center activities.