Scott Annin, Kevin Lai
Analyzing
combinatorics problems involving flags and playing cards presents common
pitfalls for students—pitfalls that can be avoided.
Gwendolyn Johnson, Denisse Thompson, Sharon Senk
The authors provide a
framework for investigating proof-related reasoning in high school algebra and
precalculus textbooks and suggest ways to increase students’ opportunity to
learn proof-related reasoning.
Michael Gilbert, Jacqueline Coomes
The MC3 project defines, describes, and characterizes the mathematics knowledge needed for teaching high school mathematics.
Heather L. Johnson
A student's response to a lesson on the fundamental theorem of calculus expands the lesson to include representing accumulated area as a function.
Kimberley O. Muller
Using The Geometer's Sketchpad helps students learn about geometric proof through exploration, discovery, and conjecture.