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Building Coherence and Progression on Sound Frameworks
Travis Lemon and Scott Hendrickson
It’s Off the Screen: Unearthing Megagons Through Technology
Sean Nank, Jaclyn M. Murawska, and Steven J. Edgar
Mathematical action technology can foster equitable student discourse. Students engage in cycles of proof to create, test, and revise conjectures through dynamic exploration of the Pythagorean theorem.
Mathematical Connections: Many Faces of the Truncated Icosahedron
Enrique Ortiz
Examine this geometric figure in light of a set of connections among fields such as architecture, geometry, science, sports, technology, and associated uses, models, and discoveries.
Exploring Geometry with Origami One-Cut-Heart
Lauren R. Holden, Yi-Yin (Winnie) Ko, Devon W. Maxwell, Connor A. Goodwin, Cheng-Hsien Lee, Jennifer E. Runge, and Elizabeth B. Beeman
One-Straight-Cut-Heart activities can help teachers support students’ engagement with geometry and can deepen students’ geometric reasoning.
Understanding Similarity through Dilations of Nonstandard Shapes
Marina Basu, Karen Koellner, Jennifer K. Jacobs, and Nanette Seago
This set of tasks progressively engages students in geometric proportional reasoning.
Exploring Sequences Related to Medial Triangles
José N. Contreras
Puddle Play!
Deanna Pecaski McLennan
Student Engagement with the “Into Math Graph" Tool
Amanda K. Riske, Catherine E. Cullicott, Amanda Mohammad Mirzaei, Amanda Jansen, and James Middleton
We introduce the Into Math Graph tool, which students use to graph how “into" mathematics they are over time. Using this tool can help teachers foster conversations with students and design experiences that focus on engagement from the student’s perspective.
The Shape of Art: Mathematics Connections
Enrique Ortiz
Asked & Answered
Each month Asked & Answered highlights selected threads from the MyNCTM community. MyNCTM is an online community where NCTM members can ask questions, start and join discussions, and interact with education experts. We encourage you to join the conversation at https://my.nctm.org.