Everything in the catalog

Tests whether a microphone is picking up sound.

Make multiple-choice review games in a Who Wants to Be a Millionaire format.

Head-to-head fact review game played against friends or computer players.

Rolls any number of virtual dice on screen.

Plinko game with custom point values for classroom rewards.

Make a custom spinning wheel with names, points or options.

Typing test with random quotes that measures speed and accuracy.

Decodes QR codes using your webcam.

Draws student names at random without repeats until all are called.

Places student names into a printable seating chart you can drag around.

Checks that a webcam works, useful on school Chromebooks.

Collection of ONNX models, such as image classifiers and detectors, that run in the page through ONNX Runtime Web.

Calculates RC low-pass cutoff and draws Bode magnitude and phase plots, with an audio demo.

A small coding agent powered by a 1.7B LFM3 model that runs locally via WebGPU.

Double pendulum simulation with adjustable starting angles and graphs of angle and energy.

High school economics simulation with sliders showing how supply, demand and inflation affect the dollar's value.

Upload an image and see detected objects outlined, computed by Transformers.js in your browser.

Enlarges an image with an upscaling model run through ONNX Runtime Web in the browser.

Generates algebra practice problems pitched at eighth graders.

Time-lapse simulation of how deforestation affects endangered species, with hover explanations and animal counts.

An on-device research agent built on LFM2.5 2.6B that runs through WebGPU in the browser.

Middle school ecology simulation of predator and prey populations over time.

Teacher mode takes a word list; student mode has learners write stories that use those words.

Fill-in-the-blank weather vocabulary exercise for fifth graders.