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Number Guessing

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Visit this site: http://www.cut-the-knot.org/Curriculum/Algebra/Cards.shtml

Author:Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Description: Think of a number and answer a few questions posed by the computer. After a while the compter will announce your number. The trick is based on a special card design whose variations appeared more than a hundred years ago.

Levels: Elementary, Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Games, Fun for Kids, Web Interactive/Java
Math Topics: Number Sense/About Numbers, Patterns/Relationships

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