Solid geometry is the biggest headache for students. If students are asked to make more cylinders, cones and spheres, and then demonstrate some simple geometries, and finally draw some cubes, pyramids and even some auxiliary lines, the teaching effect may be more obvious.
For example, when teachers talk about the concept of "as much as possible", they first show the tug-of-war scene of two teams of children in front of students, and then guide students to observe pictures, and establish the concept of "as much as possible" from the observation and analysis of pictures. Students are interested in learning because they like tug-of-war and other games.
When talking about more (less) applications, cut out 12 and 7 rabbit patterns with black and white paper plates in advance. Use teaching velvet board to post in teaching, explaining the concepts of "white rabbits are more than black rabbits", "black rabbits are less than white rabbits", "white rabbits are more than black rabbits" and "black rabbits are less than white rabbits".
After that, students are required to explain the chart or set up pictures by themselves according to "equal amount", "how much is more" and "how much is less". In this way, students' enthusiasm for learning is very high, and they not only better understand and master the related concepts and solutions of this kind of application problems, but also improve their interest and hobby in learning application problems.