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ERIC Number: EJ819057
Record Type: Journal
Publication Date: 2008-Nov
Pages: 6
Abstractor: As Provided
Reference Count: 6
ISSN: ISSN-0025-5769
The Known Mix: A Taste of Variation
Canada, Daniel L.
Mathematics Teacher, v102 n4 p286-291 Nov 2008
To create an environment in which all students have opportunities to notice, describe, and wonder about variability, this article takes a context familiar to many teacher--sampling colored chips from a jar--and shows how this context was used to explicitly focus on variation in the classroom. The sampling activity includes physical as well as computer simulations and has proven to generate lively discussion that highlights the tension between expectation on one hand and variation on the other. (Contains 2 tables and 6 figures.)
National Council of Teachers of Mathematics. 1906 Association Drive, Reston, VA 20191-1502. Tel: 800-235-7566; Tel: 703-620-3702; Fax: 703-476-2970; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: High Schools; Higher Education; Middle Schools; Secondary Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A