Interactive figures
Labs
Five experiments that make the theorems tactile. Each belongs to a chapter; none replaces doing a problem with a pencil.
The die as a sample space
Click faces, build events, watch classical probability count itself.
The clinic
A rare disease, a sharp test, and a posterior that surprises almost everyone.
Binomial workshop
Vary n and p and see a counting argument become a shape.
Settling averages
Flip a coin until the running mean forgets how it started.
The bell and its area
Mean, spread, and the chance sitting between two fences.