Collegiate maths like multivariable are greatly underrepresented on Khan Academy and will probably remain that way as long as the site is being pushed as a replacement for common middle school curricula.

I *love* the multivariable calculus videos that are available on Khan Academy (well, let's face it, I *love* all of the stuff on Khan Academy).

I would like to cast a strong vote for the developers to create an in-depth mission for multivariable calculus. As the number of machine learning devotees continues its exponential growth, I would expect the interest in multivariable calculus to grow substantially.

Thanks for your consideration!

I would also like to see a mission for multivariable calculus :D

I've voted up this request, a Multivariable Calculus mission and more exercises have been a frequent request. I'll pass it on to higher staff and see what happens. =)

are there other valid online resources to practice multivariable calculus?

youtube channel of professor leonard has lessons that I follow in parallel to my study on kahn academy, But still it would be great to have some practice on this topic on kahn academy.

I would also enjoy a multivariable calculus mission.

For the meanwhile, you can use MITOpenCourseWare, which has a multivariable calculus course available at this link: https://ocw.mit.edu/courses/mathematics/18-02sc-multivariable-calculus-fall-2010/. 

Still, a multivariable calculus mission with exercises would be really nice :).

More missions in higher-level math in general would be nice, I think. The missions are what kept me using Khan Academy to review math that I learned 15+ years ago, and they gave me confidence that I was really learning the material. With some of the higher-level courses, I watch the videos and understand them, but don't really know my own mastery---which means I have to go to another resource anyway. 

I agree. Looking for course mastery on multivariable calculus.

Would love missions on any higher level math! (beyond calc 2)