Having a good working knowledge of math vocabulary is so important for learners as they progress through different levels of mathematical learning. Here is 125 pages worth of wonderfully constructed vocabulary and concept review cards....

It's a printable number line to 100! Cut it out and use the easy tabs to glue into one long number line. 

This sample chapter from Hurst's book Picturing Math is an excellent resource for using picture books and activities for learning computation.

Volume 3 in an eworkshop Guide to Effective Instruction in Math outlines and illustrates instructional strategies for teaching multiplication to students in grades 4 through 6. Sample learning activities included.