Learning Modules
This page collects some web apps for use in teaching and math circle outreach. More modules will be added over time.
Teaching modules
Teaching modules organized by course.
Outreach modules
Outreach · Grades 9-12
Fifteen Puzzle Explorer
A sliding-puzzle interface with 15-puzzle and 7-puzzle modes for strategy practice. Follow-up pages on solvability and solving strategy are linked from the explorer.
Outreach · Grades 9-12
The Envelope Problem
A guided activity on a classic probability paradox, with an interactive lab and follow-up pages to test intuition and identify where naive arguments fail.