Friday, January 22, 2016

Expii: a free platform for crowdsourced explanations and practice problems

According to the website, Expii is
a free, open, and interactive platform for crowdsourced explanations and practice problems in math and science. Learn, discover, explain, and explore. Together, we can ensure that everyone has access to a personalized education.
One thing I really like about it is the focus on multiple ways of explaining the same concept - if a bunch of people all explain something in the way that makes most sense to them, every learner can find an approach that clicks.  They also release occasional problem sets, which require creative thinking, vary in difficulty, and are written by Po-Shen Loh (a math professor who coaches the US IMO team).

This website is still in its early stages, and there are a lot of topics which don't yet have any explanations. But I think that teaching is one of the best ways to learn, so I highly encourage students to contribute! Eventually, I think it will be a great resource not only for students who want to learn on their own or are struggling to understand a concept in school, but also for future and current teachers who or are looking for alternate ways to explain something.

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