In this lesson, third graders were asked how many degrees is a full rotation around a circle. After we gave students time and space to disagree, to make and test conjectures, and to explore, they reasoned about angle as turn and determined a full rotation is 360 degrees.
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Amanda L. Cullen, Carrie A. Lawton, Crystal S. Patterson and Craig J. Cullen
Excerpts from discussion threads on the online MyNCTM community
Enrique Ortiz
Example—This article describes the unusual algebraic thinking displayed by several students when they met The Chicken problem
Kelsey A. Clarkson and Jennifer M. Tobias
Three high school classes use numbers lines, comparisons, arithmetic operations, and algebraic manipulations to investigate equivalence.
Brandon G. McMillan and Theodore Sagun
This instructional activity gives teachers access to student thinking that can be leveraged to extend and connect their ideas.
Wayne Nirode
Students use movement and tracing paper to determine sets of points that are equidistant from two points, from two intersecting lines, and from a line and a point not on the line.
Megan H. Wickstrom and Matt B. Roscoe
During a middle school task, students compare the sizes of Lake Tahoe and Flathead Lake.
Nickolaus A. Ortiz and Trina J. Davis
One prerequisite to implementing a holistic form of culturally relevant pedagogy is to plan spaces, opportunities, and lessons for making connections.
S. Asli Özgün-Koca and Matt Enlow
In this month’s Growing Problem Solvers, we aimed to help students explore patterns where they pay attention to the mathematical structures behind those patterns.
