Illustrating the Standards for Mathematical Practice
Properties of Quadrilaterals
Problem Solving and Precision, 9-12
Cathy Humphreys facilitates a geometric design task intended to deepen students' understanding of properties of quadrilaterals and scaffold their use of reasoning and proof. Central to the students' exploration of the mathematics is a poster describing an "Investigative Process." The poster is used as a tool by the teacher and students to support problem solving and perseverance.
You may also download this video in a higher resolution format: pro quad problem solving.mov (206 Mb)
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