
The worse you explain your material, the more you learn
Try explaining your lesson awfully. Just painfully and embarrassingly simply.
For example, instead of repeating a textbook definition word-for-word, translate the concept using your own language. Use weird analogies. Make it sound stupid. I know it sounds ironic. But if you're studying maths, imagine it's a piece of bread or whatnot. Only then will you get what you’re trying to make sense of.
The reason this works is that explaining forces you to retrieve and organize the information instead of simply recognizing it on the page. If you can only explain something using the exact sentence from your notes, you might recognize the words without actually understanding the idea.
If you can make a complicated concept sound embarrassingly simple and still get it right, you probably unlocked another effective way of learning.