Not to mention that if you watch anything at Khan Academy, they jiggle the page and nag you every 30sec to log in to save your progress (even when you dismiss the notification).
Taking this opportunity to gripe about KA : I took their intro to chemistry, and the production quality of the videos was so erratic that I thought it might be a joke -- e.g., first video disjointed, second coherent but sounded like it was recorded over a '50s telephone, etc etc.
Hate to look a gift horse in the mouth, but this one needs a housecall from the vet
Would you have a link? I found those videos that I did watch pretty good, definitely not lacking in quality. That was mostly math, just a few chemistry videos (some 20?).
Hate to look a gift horse in the mouth, but this one needs a housecall from the vet