Pop-up polyhedra–three-dimensional models that can be stored for future reference–are easily constructed using The Geometer's Sketchpad and give students experience in using transformations in the plane.
S. Louise Gould
Walter J. Whiteley and Ami Mamolo
Investigating rates of change in volume without calculation leads to an enriched sense of the optimization process and encourages reflection and connection among different approaches.
Cindy M. Cherico
Simulating a real-world marketing situation, students examine the mathematical calculations that play an integral part in product design.
Aimee J. Ellington and Joy W. Whitenack
A mathematics specialist has great success using a pattern-block configuration to help a small group of fifth graders understand that fractional parts of a whole unit must be equal in size. That's just the way the funky cookie crumbles.
Kathy A. Bacon
Presented with a variety of palatable, inquiry-based, creative learning choices in geometry, this teacher and her fifth graders found tremendous satisfaction in meeting target goals for reasoning skills and taking important “next steps” in learning.
Shuk-kwan S. Leung and Jane-Jane Lo
As part of her holiday preparations, Cathy decorates sugar cubes. Cathy's aunt, Ms. Betty, runs a bakery and likes to think of ways to make her store more attractive, especially for holidays. She enjoys cutting, arranging, and designing seasonal displays with her famous brownies almost as much as she enjoys baking them. And everyone loves the different sizes of Ms. Kate's chocolate sticks.