I was trying to learn Linear Algebra from Khan Academy and found it a little sad how all of the units after the first one (even the first one at certain junctures) just lack exercises, primarily being videos. I absolutely think linear algebra is a great subject and will gain significant importance in the coming years with the Age of AI, and some sort of exercises should be created.
Thank you
None of the Khan Academy math courses I have looked at have nearly enough exercises to be a main curriculum in the subject, in my opinion. It sounds like the Linear Algebra course is particularly lacking in practice.
Perhaps you can find exercises for each topic somewhere online or in an inexpensive used textbook.
Good luck.
~ Janice, KA user
I have a friend, and him and his brother use Khan Academy for their homeschooling, and probably their sister used to as well (she’s an adult now), but they like to use a website called (can’t put link so I’ll put instructions on how to get there at the bottom of this page) for their math, they say that it has lots of exercises and gets them ahead of their grade, and they like it more than KA.
Search Thinkwell homeschool in your browser, and pick this one: 
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