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ERIC Number: EJ779102
Record Type: Journal
Publication Date: 2007
Pages: 3
Abstractor: ERIC
Reference Count: 1
ISSN: ISSN-0819-4564
Secrets of the Crystal Ball
Croucher, John S.
Australian Senior Mathematics Journal, v21 n2 p18-20 2007
This article describes how a crystal ball known as "The Flash Mind Reader" is played. "The Flash Mind Reader" is a mathematics game in which the player is invited to select any-two digit number and then subtract the sum of these two digits from the original number. A chart is provided in which the (adjusted) number they obtained will have a symbol next to it. This crystal ball game is a wonderful example of how mathematics can be used in an absorbing way and provides an interesting challenge for students to uncover the secret behind its mysterious powers. (Contains 1 table.)
Australian Association of Mathematics Teachers (AAMT). GPO Box 1729, Adelaide, 5001, South Australia. Tel: +61-8-8363-0288; Fax: +61-8-8362-9288; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A