Explain It Simply
If you can explain it simply, you understand it. Write it in plain words, find where you get stuck, then turn the key points into recall cards.
The Feynman technique and self-explanation: explain it to a 12-year-old, spot the gaps, simplify.
Short sentences, everyday words, no jargon.
Places where you used a term you can't explain, or skipped a step. Look those up.
"It's like…"
Turn it into recall cards
Write the key questions and their answers; they become a Recall Cards deck so you can test yourself later (retrieval practice).
Notes are kept on this device only.