1. Graphic analysis method:

This is actually an intuitive and targeted simulation method, which is widely used in mathematics teaching. Such as engineering problems, speed problems, deployment problems, etc. It is often analyzed by drawing, and students can understand the meaning of the problem through charts, so as to set unknowns and list equations to solve according to the content of the problem.

2. Personal experience method:

For example, swim against the current, swim against the current. Many students have never been on a boat, so it is difficult for them to understand the speed of sailing with the current, against the current and against the current. In order to make students understand, I take cycling as an example (because most students ride bicycles). The students all have personal experience. Riding with the wind is easy, but riding against the wind is difficult. This is the effect of wind speed.

At the same time, it is clear that sailing boat and bicycle are the same thing, and the different factors that affect it are current speed and wind speed. In this way, students can understand.

At the same time, it is also clear that the speed of a ship sailing along the river is equal to the speed of the ship in still water plus the speed of the current; The speed of sailing against the current is equal to the speed of the ship in still water MINUS the speed of the current.

3. Intuitive analysis method:

If it is a concentration problem, we should first explain the meaning of percentage concentration and the calculation method of percentage concentration.

Secondly, it is important to prepare several cups before class and weigh a certain amount of water and several packets of salt into the classroom for example.