Sheldon P. Gordon
The notions of doubling time and half-life are investigated for families of functions other than exponential, including linear, power, logarithmic, trigonometric, and logistic
Timothy Fukawa-Connelly, Stephen Buck
A model in use at Prospect Hill Academy in Cambridge, Massachusetts, provides a skills-based portfolio assessment for mathematics classes.
Daniel M. Fishman
In this variation of the well-known card game Go Fish, players seek to pair prime factors contained within the cards' face values.
Usha Kotelawala
Conversations among three high school teachers as they plan a unit on deriving the quadratic formula allow them to share ideas and reflect on their teaching struggles and successes.
Joshua D. Craven
With the help of hint cards, students formulate and prove conjectures angle measures, first for pentagrams and then for hexagrams, heptagrams, and general n-grams.