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How to teach division and composition of mathematics in grade one?
The division and composition of mathematics in grade one are taught like this:

1, the use of toys and articles, the use of various teaching AIDS and toys, such as cards, beads, small toys, etc. Can help students intuitively understand the division and combination of numbers. For example, show the number 5 by counting beads, then remove two and ask the students how many beads are left. This can help students understand that 5 can be decomposed into 3 and 2, or 4 and 1, and the relationship between these numbers.

2, math stories, writing math stories to teach division and combination of numbers is an interesting method. For example, you can write a story about a child who has five pieces of candy. He ate two, and there are still a few left. In this way, students can connect problems with real life and learn to express and solve problems with numbers.

3. Make a digital card with numbers and corresponding images on it. For example, three apples can be drawn on a card with the number 3. Students can use these cards to practice division and combination of numbers. They can choose two digital cards, combine them and find their sum.

4. Math games. Designing math games to teach division and combination of numbers can stimulate students' interest. For example, you can design a jigsaw puzzle, and students need to put the puzzles together to reach a specific sum of numbers. This can train students' logical thinking and mathematical ability.

5, exercises and homework, provide students with exercises and homework, so that they can consolidate what they have learned after class. These exercises can include division and combination of numbers. For example, 3 can be decomposed into 1+2, 2+ 1, 3+0 and so on. Through repeated practice, students can better master these concepts.

6, interactive teaching, encourage cooperation and interaction between students, so that they can solve the problem of splitting and combining numbers together. Students can ask each other questions and then answer each other, which helps to consolidate understanding and improve cooperation ability.

When teaching first-year mathematics, make sure that the course is interesting, interactive and relevant to real life. By using a variety of teaching methods, students can easily understand the division and combination of numbers and establish a solid mathematical foundation. These basic concepts will play an important role in future study, so it is very important to ensure that students master these concepts firmly.