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President's Choice: Happy Integers

Mary Lindquist 

January 2007, Volume 100, Issue 5, Page 308

Abstract:
The favorite article of a past NCTM president chosen for reprise as part of the celebration of the journal's 100th volume year. This article is about cheery sequences and happy numbers, with an opportunity to discuss wording of conjectures and to explore proofs. Includes a computer program in BASIC.

Keywords:
Article
Computers
Grades 9-12
Connections / Applications
Numbers and Operations
Teacher