The cycling shop

Author: Sara Liebert
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The August 2016 problem scenario introduces a task designed around SMP 2: Reason abstractly and quantitatively, and encourages students to move between decontextualizing and contextualizing as they work toward solutions. To access the full-size activity sheet, go to http://www.nctm.org/tcm, All Issues. Each month, this section of the Problem Solvers department showcases students' in-depth thinking and discusses the classroom results of using problems presented in previous issues of Teaching Children Mathematics. Find detailed submission guidelines for all departments at http://www.nctm.org/WriteForTCM.

Contributor Notes

Sara Liebert teaches at John Muir Elementary School in San Francisco, California, and has several roles: math instructional coach, a new position after being a classroom teacher for ten years; math teacher for a fifthgrade class of 17 students, most of whom she taught the previous year as fourth graders; and lead teacher for the school's participation in the district's Lesson Study project.

Edited by Michael Flynn, mflynn@mtholyoke.edu, the director of mathematics leadership programs at Mount Holyoke College, in South Hadley, Massachusetts; and Claire Riddell, clairemarieriddell@gmail.com, an assistant in research at The Florida Center for Research in Science, Technology, Engineering, and Mathematics (FCR-STEM) at Florida State University. Each month, this section of the department showcases classroom results of using problems presented in previous issues of Teaching Children Mathematics. Find detailed submission guidelines for all departments at http://www.nctm.org/WriteForTCM.

Teaching Children Mathematics

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