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50 Years of ERIC
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ERIC Number: EJ717671
Record Type: Journal
Publication Date: 2004-Jan-1
Pages: 5
Abstractor: Author
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0025-5769
Why Is Square Root of 25 Not Plus or Minus 5?
Roach, David; Gibson, David; Weber, Keith
Mathematics Teacher, v97 n1 p12 Jan 2004
Students learn more when they attempt to make sense of a mathematical situation they face. For example, a question like why square root of 25 is not + or - 5. Providing the intermediate steps and the reasoning of a technique with graphs can help make better sense of mathematics.
Descriptors: Mathematical Concepts, Mathematics Education, Transformations (Mathematics), Mathematics Instruction
National Council of Teachers of Mathematics, 1906 Association Drive, Reston, VA 20191-1502. Web site: http://www.nctm.org.
Publication Type: Journal Articles; Opinion Papers; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A