Examining the covariation of triangle dimensions and area offers a geometric context that makes analyzing a piecewise function easier for students.

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Mathematics Teacher: Learning and Teaching PK-12
  • DeLeeuw, William, Samuel Otten , and Ruveyda Karaman Dundar. 2021. “Structuring Boardspace to Facilitate Repeated Reasoning.” Mathematics Teacher: Learning and Teaching PK–12 114, no. 3 (March): 196204.

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  • National Governors Association Center for Best Practices (NGA Center) and Council of Chief State School Officers (CCSSO). 2010. Common Core State Standards for Mathematics. Washington, DC: NGA Center and CCSSO. http://www.corestandards.org.

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  • Peterson, Blake E. 2006. “Counting Dots and Measuring Area: Rich Problems from Japan.” Mathematics Teaching in the Middle School 12, no. 4 (November): 21419.

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