Hummer's Mind Reader
Library Home || Full Table of Contents || Library Help
|Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny|
|Java simulation of a magic trick invented in the 1950s by the magician Bob Hummer. Choose one of three coins. Swap the other two, then swap as many pairs as you like. When you're done, the computer will announce your selection. The explanation includes a "finger mnemonic" for use off the computer.|
|Levels:||Middle School (6-8), High School (9-12), College|
|Resource Types:||Simulations, Fun for Kids, Web Interactive/Java|
© 1994- The Math Forum at NCTM. All rights reserved.