MathCheck out math resource books, math picture books and hands-on math items at Sprout Classrooms for 50-90% off retail!
Promote Problem Solving- Ever felt frustrated because your students could use simple logic? Help them to stretch their brains and practice problem solving. From this site.
Math Through Quilting From this site.
Picture Books About Math- A massive, unorganized list of picture books about math that I compiled when trying to write a grant. If you're looking to incorporate literacy into your mathtime, this list may help.
Large Playing Cards- A full deck, each card the size of half a sheet of paper. Perhaps useful for math games or activities?
A math museum is a bulletin board that features ideas that students are learning at the moment. It can be changed for each chapter, or stay the same-depends on your preference. I thought it would kind of cool to do frames like this cover of Blueprint-all the frames look different, but are painted the same color. You could put each idea in a different frame, making it a real museum.