LearnLens

Interactive tools for teaching introductory statistics and calculus. Built for the places students actually get stuck, keyboard-accessible throughout, and readable on a phone.

StatLens →

Simulation-based inference, distribution calculators, and exploratory data tools for an introductory statistics course. Bootstrap intervals, randomization tests, ANOVA, regression.

38 tools · used in Stat 145

CalcLens →

Limits, derivatives and integrals. Watch a derivative graph build itself from tangent slopes, or an integral accumulate as you slide its upper limit.

early prototype · used in Math 207

For instructors

Every tool is addressable by URL, so a slide, a textbook page or a homework problem can link a specific function, dataset or seed — and can strip the page down to just the figure for embedding. The parameters are documented and frozen: the URL API.

Nothing loads from a content delivery network. Charts, fonts and maths all ship with the tools, so a lecture does not depend on the room's wifi.