21. (FOR HIGH LEVEL 1) WRITE DOWN YOUR KNOWLEDGES.

When you can’t remember the suitable solutions, don’t stop! I said in the 1st method, “Write down! Move your hand!” By moving your pencil, you should write down your knowledges related to the problem. I dare say again, make a note about the things useful for solving. For example, formulas, theorems, definitions, mathematical property and so on. This action will give you some hints.

See you next.

Nasuno Kumao