colaBeration

And please don't take 4 years to fix this problem again.

1. Community
2. Feature Requests and General Site Feedback
3. I want to restart a course challenge'/unit test

Hello Khan Academy support team, I don't know what's wrong but the start over feature is not on the course challenge and when I mess up I literally have to spend 5 minutes skipping through 30 quest...

1. Community
2. Feature Requests and General Site Feedback
3. I want to restart a course challenge'/unit test