How to read the lesson mastery?

If there’s a guidebook about how to use the gradebook and specially the mastery part I would appreciate it a lot. That way I don’t need to bother you with questions.

If not, then my questions are:

  1. How are these concept skills and mastery graded?
  2. Is there any way to see what each lesson contributes to the skill tree?
  3. When I put my mouse on top of the colorful square that shows the level of expertise, it gives me information that I don’t know how to read. For example: total; 56% (tutorial 0/10, DIY: 16/20, puzzle 40/40, quiz: 0/30)
  4. Once I know how to read that information, how can I know what the student needs to work on in order to improve that skills.
  5. Is there a way to see how many stars the kids achieved on each lesson? I can see which ones they finished but not how well they did on each.

Thank you