1, review of knowledge points in this issue. Understanding of numbers. Definitions and expressions of integers, decimals, fractions and percentages. Four operations and mixed operations of numbers. Digital comparison and unit conversion. Graphics and geometry. Understanding and characteristics of basic graphics (triangle, rectangle, square, circle, etc.). ). Measurement and calculation of graphics (perimeter, area, etc. ). Statistics and probability. Collection and arrangement of data.
2. Interesting math problems. Classic mathematical riddle, riddle: 15 people play hide-and-seek and catch 12 people. How many people are left? Answer: 0 people. Math brain teaser, riddle: 100 people played hide-and-seek and caught 98 people. How many people are left? Answer: 100 people, because what is caught is hidden.
3. Answers to interesting math questions. Example: Title: A farmer wants to take a wolf and a sheep aboard. There is a rabbit on board. When the farmer is away, the wolf will eat the sheep and the sheep will eat the rabbit. How should farmers solve this problem? Answer: Farmers should keep wolves and rabbits together, because sheep eat rabbits and wolves eat sheep, so that wolves and rabbits can contain each other and keep a balance.
4. Math story sharing. Share a short story about mathematics. For example, Gauss is a famous mathematician in Germany. He showed extraordinary talent in mathematics in his early years. Once, his teacher had a difficult problem and asked his students to find the sum of 1 to 100. This task seems simple, but it is difficult for primary school students. But Gauss soon got the answer.
5. Preview the next knowledge point. Predict the knowledge points to be learned in the next math class in advance, such as the symmetry and translation of graphics. Symmetry of graphics: axisymmetric graphics, central symmetric graphics, mirror symmetry, etc. Definition, nature and drawing of translation. Rotation of graphics: definition, nature and drawing of rotation.
6. Appreciation of famous mathematical sayings. Collect classic mathematical sayings, such as: "Mathematics is the highest achievement of human thinking." -Misra "Pure mathematics is the magician's real wand." -Novalis "Infinite! No other problem has touched the human mind so deeply. "-Hilbert" Mathematics is the queen of science; Number theory, the queen of mathematics. " Gauss.
The benefits of learning mathematics
1. Cultivate logical thinking ability: Mathematics is a subject that needs strict logic. By studying mathematics, we can exercise our logical thinking ability and problem analysis ability. This ability can be applied to all aspects of daily life, helping us to better understand the world and solve problems.
2. Enhance spatial imagination: The spatial imagination in geometry and mathematics is closely related. Learning mathematics can help us better understand the spatial relationship and improve our spatial imagination, which is very useful in our daily life and work. It can exercise our thinking ability and logical reasoning ability, and let us better understand and solve problems in life.
3. Cultivate patience and carefulness: Mathematics needs patience and carefulness. By studying mathematics, we can cultivate our patience and care, because many problems need accurate calculation and reasoning, and improve our ability to deal with complex problems. Mathematical problems usually need accurate calculation and reasoning, and once they make mistakes, they may lead to wrong answers to the whole problem.