The sixth grade has entered the review stage of junior high school, and I have a lot of knowledge about geometry, especially the units of cuboids and cubes. There are many knowledge points and formulas of surface area and volume, which are confusing and flexible. Here we share two key and difficult problems about the application of cuboid and cube knowledge points in life. ?
In the math test paper, geometry? The question is really a cliche. Unfortunately, it is wrong to keep talking. Geometry never changes? Abuse? Students, but everyone can't give up easily. After all, from primary school to high school, this knowledge is what we should focus on. Learning is a gradual process. Therefore, even if it is not for the senior high school entrance examination, primary school students should lay a solid foundation for junior high school geometry learning. If they feel that junior high school can't keep up, it must have a lot to do with the learning situation in primary school!
Area is an important concept in plane geometry. Finding the area of a figure is one of the most common basic problems in plane geometry, and it is also the key content of Xiaoshengchu geometry. Why many children are afraid of difficulties is because they are caught in a strange circle of reciting formulas, and the memory without understanding is actually an obstacle to the cultivation of mathematical thinking. Mathematical problems are ever-changing, and geometric problems are more diverse. Knowledge and methods need to be used and summarized more, and mathematical ideas can be extracted from them, which reflects children's real mathematical strength. Therefore, solving problems cannot be limited to basic problems. We should use the above methods and knowledge comprehensively through more challenging problems that we don't know how to start. Only by thinking about the process of breakthrough can children understand mathematics and enhance their sense of accomplishment.