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I second this and would strongly advise this approach.

The courses available on Khan Academy help you visualize the math and gain a better understanding on the 'why' (reasoning) while also teaching you the 'how' (application).

There's sufficient math courses available to teach you everything from pre/primary school arithmetic to first year university/college level calculus/linear algebra.

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I hope that their math section is better than some of their engineering courses. See the critique at,

http://www.leancrew.com/all-this/2012/12/khan/

I've also been involved in teaching similar material as Dr. Drang and agree completely with his critique.

I've come across students who've had similar sloppy teaching and had to re-teach material so they could unlearn what they'd learnt and get a proper foundation for moving forward. Consistently, they would have very poor assignments for the first few weeks until they had that foundation.

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