I was just thinking today that they (Khan Academy) should add an instant search instead of the wall of links they have currently. For a user such as one of us,

I was just thinking today that they (Khan Academy) should add an instant search instead of the wall of links they have currently. For a user such as one of us, the wall of links is ideal for a CTRL-F find to quickly highlight lessons on, say, vectors, but for non-technical users, this solution may not come to mind.