Please answer the questions separately 

1. Out of the concepts you have studied in this course, choose one that you feel would be particularly difficult for students to understand. Provide a concrete real-world situation or example to help illustrate this concept.

2. It is necessary to have a good understanding of mathematics in order to teach it. Who do you think would make a better math teacher: a person who has natural mathematical talent and understands concepts easily without making mistakes, or a person who had to struggle to gain their understanding of math and learn to avoid making mistakes?