3Blue1Brown - The Essence of Linear Algebra
A wonderful series of short videos by Grant Sanderson that explore the fundamental ideas of linear algebra in a way that provides visualization and context for the primary concepts. They serve as both a gentle introduction to some of the tougher concepts and a great way to review and reinforce the main ideas.
MIT provides many online resources through their Open Courseware program. Linked here is a full class, including video lectures, featuring MIT professor Gilbert Strang. The authors of these notes take inspiration from his lectures on this subject for our own writing here and classroom presentations.
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