MATH FEST 2015

17 proofs that 1=2 (But Proofs #6,#7,#9 need Jim Tanton and you can't download him!)

100 Problems involving the Number 100

Primer on Abott & Costello Numbers

The Brain puzzle spinout and the GRAY CODE

(The secret to many of these 70s puzzles is that at each step there are only two choices and one of them you just did!)

JOE GALLIAN's 75 YEARS of CONTESTS . (BIG FILE WITH VIDEOS)

JOE GALLIAN's 75 YEARS of CONTESTS (PDF VERSION)