Vena M. Long
A lesson in which a chambered nautilus connects geometry and poetry. The lesson is easily adapted to a wide range of levels.
Barbara D. O'Donnell
One teacher's approach; creating a class business as the context for learning mathematics, with proceeds going to community projects.
Jennifer M. Bay
The uses of a life-sized number line which helps students visualize number relationships.
Margaret W. Tent
How students develop a conceptual understanding of the formulas of the circumference and area of a circle by exploring the number pi. Several activities are suggested.
Lisa J. Evered
Riddles, puzzles, and paradoxes, and their uses to engage students in rich mathematical explorations and logical reasoning.
Suzanne Levin Weinberg
An activity in which students develop personal units of measurement to compare standard and nonstandard measurements. An activity sheet is included.
Mary J. DeYoung
How "challenge problems" help students become better problem solvers and encourage them to practice the art of clear written communication. Problems and a scoring rubric are included.