Question (1): First-grade primary school students can't understand math problems. First of all, they don't know enough about such problems. Secondly, they don't have a solid knowledge of this subject, which leads to their ignorance. Thirdly, I can't understand what others are saying because of some problems in Chinese and language expression. I think we can read the suggestions and books in this field first. If it is an exam, we can write down our own answers first. If it is wrong, the teacher has to ask him patiently why he thinks so, find out his thoughts, explain and point out the mistakes. At home, it is up to his parents to enlighten him. In addition, freshmen should answer more questions about mathematics and Chinese, learn to think, be careful and think more about why editors ask this question. What would I do if I were you?

Question (2): (

) -23=8, you can draw 3 1 student, then stand on the left, and ask 8 students to stand on the right. They will definitely count one by one and say 23. Then, you stipulate that they are not allowed to count. Of course, some smart students may think of reverse thinking, but most don't. In this case, you should be patient, for example, tell them. I believe that students all have the concept that the sum of two sides is 3 1, and then you can explain it further. I believe that after several exercises, they will have a general concept.