“I am in awe of Mathigon’s work.”James Tanton, MAA

“Beautifully designed reinvention of the traditional textbook.”WideOpenSchool.org

“Beautifully designed and interactive courses. A front-runner for a new generation of textbooks.”Common Sense Education

“One of the most accessible and engaging maths resources available on the web, a true mathematical wonderland.”Alex Bellos, The Guardian

“Textbook is the wrong word, because this is something totally new.”ilearntechnology

“Be ready to be visually blown away. Amazing math resources for the classroom!”Michelle, Teacher