<span>Remember to look for mistakes you have made in the past.
This is the best choice so you can learn from your past mistakes to make sure you do not make the very same mistake again!
:)</span>
The subject is the book and papers that are stacked
Answer: Let's teach for mastery -- Not test Scores
Sal Khan shares his plan to turn struggling students into scholars by helping them master concepts at their own pace. He discusses the idea that many students don't enjoy topics like math because they never learned or mastered basic steps needed for more difficult equations.
Explanation: there you go hope this helps pleas give me brainliest