Exercises about glue and trees and addresses can inoculate students against their notorious tendency to reduce incorrectly when simplifying expressions.
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Becky Hall and Rich Giacin
Tying your teaching approach to the Common Core Standard for Geometry and Congruence will help students understand why functions behave as they do.
Christopher E. Smith
Considering circles in taxicab geometry helps students with Euclidean concepts.
Emily Sliman
Chalk Talk and Claim-Support-Question are two routines for developing students' ability to use multiple representations and encouraging classroom discussion.
Jeffrey J. Wanko, Michael Todd Edwards, and Steve Phelps
The Measure-Trace-Algebratize (MTA) approach allows students to uncover algebraic relationships within familiar geometric objects.
Dustin L. Jones and Max Coleman
Many everyday objects–paper cups, muffins, and flowerpots–are examples of conical frustums. Shouldn't the volume of such figures have a central place in the geometry curriculum?
Jennifer E. Circello and Scott R. Filkins
A geometric solids unit inspired by Plato's Cave Allegory uses different forms of three-dimensional objects to give students a clearer understanding of the realities of these objects.
Arnold E. Perham C.S.V. and Faustine L. Perham
The same rain that washes out the high school baseball team's game supplies data for a class geometry project.
Beth Cory and Ken W. Smith
Through these calculus activities, students reach an understanding of the formal limit concept in a way that enables them to construct the formal symbolic definition on their own.
Carol J. Bell
Reasoning and Proof is one of the process standards set forth in NCTM's principles and standards for school mathematics (2000).
