Graphic Organizer/Worksheet


Factor Monster is our name for a classic game about natural numbers, factors, proper factors, prime numbers, composite numbers, and related algebraic alakazams. A computer version called Taxman appeared in People's Computer Company in 1972. It was also known as The Factor Game and described in the article "The Factor Game" by J.B. Harkin and D.S. Martin in the Arithmetic Teacher, volume 20, pages 580-582 (1973).


  • Mathematics > General

Education Levels:

  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8


game math number factor prime composite



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License Deed:

Creative Commons Attribution 3.0
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Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2008-11-05.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 3

Reviewer Comments:

As described, this resource consists of a classic math game on natural numbers, factors, proper factors, prime numbers, composite numbers. A corresponding mini-lesson / glossary is included at the end of the activity. This activity may be somewhat challenging for elementary students and would be better suited for middle- and high-school students.
Lucy Land-Davis
October 26, 2009

Non-profit Tax ID # 203478467