Why "tinker and see"? Because the ideas that stick are the ones you find yourself. Every explorable here is built the same way: you get something to drag, flip, count, and break β and the big idea appears in your hands, before anyone tells you the answer.
Made by a dad and his 9-year-old test pilot. Inspired by Bret Victor's Explorable Explanations.
The explorables
The Secret of the Square Corner
A mystery hiding in a tiled floor. Count it, build it, slide it, pour water on it β and discover for yourself one of the most famous ideas in mathematics.
Play βCan a Wheel Measure Itself?
Roll it, measure it with its own purple stick, then squeeze out the most famous number in the universe β the exact way Archimedes did 2,200 years ago.
Play βHow to Mentally Calculate the Day of the Week for Any Date
Two secrets β a clock of leftovers and a squad of dates β and you can name the weekday of any date in history, in your head. John Conway's famous trick, learnable in an afternoon.
Play βMore coming soonβ¦
The test pilot is busy tinkering. New explorables land here as they pass kid-QA.
Soon㪠Don't miss the next one
New explorables take a while to build (the test pilot is thorough). Leave your email and you'll get one short note when the next one ships β nothing else, ever.