Daily Quiz
Three challenges from the archive
One easy quiz, one medium quiz, one hard quiz. The same daily ritual in French and English.
July 25, 2026
Parameters: One Letter, Many Equations
Notice how a parameter changes a formula or its solution.
Parameters: Changing the Solution Set
Track how parameters alter roots, multiplicities, and equations.
Parameters: Thresholds and Families
Locate tangency thresholds and analyze whole families of quadratics.