Number Concentration Table Game

script by Hilary Caws-Elwitt

as recommended in chapter 7 of The Non-Runner's Marathon Trainer by Whitsett, Dolgener, and Kole.



How many rows?       How many columns?      


I spent way too much time writing this back in 2004 (I didn't know Javascript), so I'd love to hear from anyone who uses this! View source to see the script. Please email me at