1. Solid foundation: Mathematics is a basic subject. To prepare for senior one mathematics, we must first lay a solid foundation for junior high school mathematics. If your junior high school math foundation is not solid enough, senior high school math will encounter many difficulties. So I suggest you spend time reviewing junior high school mathematics in summer vacation, especially the key knowledge points and error-prone points.

2. Make a study plan: During the summer vacation, you need to make a detailed study plan, including daily study time, study content and review content. This can help you better master knowledge points and improve learning efficiency.

3. Do more questions: Mathematics is a subject that needs to be practiced. Only by constantly doing problems can we master knowledge points and problem-solving skills. I suggest you do more basic and moderately difficult questions to gradually improve your problem-solving ability.

4. Learn to summarize: In the process of learning, learning to summarize the knowledge points and problem-solving skills you have learned can help you better remember and understand the knowledge points.

5. Ask for help: Don't be shy when you encounter difficulties in your study. Ask teachers, classmates or parents for help. They can give you some useful advice and guidance to help you solve the problem better.

In short, it takes a lot of effort and time to become a master of mathematics in the summer vacation, but as long as you persevere, make a good study plan, do more problems, learn to sum up and ask for help, I believe you will become an excellent master of mathematics.