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1,100 videos on YouTube covering everything from basic arithmetic to chemistry, biology, calculus and economics. 8 million video views and growing. 70,000 students a month watching 35,000 videos a day. Over 2 million minutes of instruction delivered world-wide in the past week. Self-paced teaching software and assessment. The most used, most exhaustive, and richest instruction on the Internet. Mission of providing a world-class education to anyone, anywhere, for free.

"Research shows that a project to use the devices as teaching tools in some N.C. districts has had a measurable impact on student achievement in math."

The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here On this website you will find thousands of our free mathematics enrichment materials (problems, articles and games) for teachers and learners from ages 5 to 19 years. All the resources are designed to develop subject knowledge, problem-solving and mathematical thinking skills. The website is updated with new material on the first day of every month.