Lawrence Hall of Science, University of California at Berkeley, Berkeley California 94720. The Math-Computer Connection. Math Projects for Young Scientists. National PTA and Exxon Foundation. Video tape and pamphlet useful for parent meetings.
Some books lend themselves more to in-depth and specific math discussion.
Only a fraction of these books could be listed here. Anno's Counting Book. Thomas Y. Crowell. Anno's Counting House. Anno's Hat Trick.