1. Make a card, take out a piece of cardboard, fold it in half, unfold it, and fold it along the center line. Cut the next paragraph with scissors and put it in the middle of the cardboard. Write on the cardboard with a black pen and cut out the colored paper. Then write the wrong question and open the answer corresponding to the question. Stick the cut cardboard on the big cardboard with double-sided tape.

2. Use two colors of pens. For example, pens with black refills and pens with red refills. A pen with a black refill is used to copy questions. The source of the question should be indicated, such as the unit test in Unit 4 and the copy number. You can write the answer with a pen with a red refill and write the correct answer. The answer is best to fill in independently after understanding the meaning of the question.

3. You can bind the wrongly written cards into a small notebook, or put on buttons, so that it is not easy to lose them. Put them in your schoolbag and you can pick them up at any time to review and consolidate them.