Originally blogged on 2003.04.01
In the thread "CS for 5th graders" on the ACM SIGCSE members mailing list, Beth Simon writes:
The unequivocal winner is "Computer Science Unplugged" A book available in print or electronically at: http://unplugged.canterbury.ac.nz/
The summary also points to math games and puzzles.
I should look that link up again in preparation for SMIT-Ed. I find that I may actually be helpful...