The Feynman Technique for Learning Math
Explain one method simply enough to reveal gaps.
Explain it simply
Teach one carry as raw windows
A good explanation names the window before naming the answer.
- 1Read tens: 6 + 5 = 11.
- 2Read ones: 8 + 7 = 15.
- 3Settle 11 | 15 into 125.
Gap signal
If the carry feels hidden, practice one answer-window example before moving on.
Explain one idea plainly, find the weak sentence, then repair that exact gap.
Promise
This works for math because vague wording usually reveals vague understanding.
Worked Example
For 15% of 240, say: 15% is 10% plus 5%. 10% is 24. 5% is half of 24, so it is 12. The answer is 36.
Mistake to Avoid
Do not explain a whole chapter. Pick one method, one example, and one sentence that feels unclear.
Practice Drill
After a missed problem, write three sentences explaining the method. Circle the weakest sentence. Rework one nearby example.
Recap
The goal is not a polished note. The goal is finding the exact place where your explanation stops being clear.