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How to talk about RMB teaching of mathematics in large classes?
Activity objectives:

1, guide children to communicate and understand the general characteristics of RMB 1, 2,5, 1 yuan.

2. Guide children to understand the RMB exchange relationship of "1 yuan = 10 jiao" and use it in games, and encourage children to use what they have learned in their lives.

Activity preparation: Collect 9 baskets of toys with the price of (1, 2,5, 1 RMB) with children, and each child has a set of game coins.

Activity flow:

1. Guide children to observe and exchange RMB carefully and find the characteristics of RMB with different denominations.

A, let's look at the RMB of 1 yuan. What did you find? (The teacher summarizes the children's answers and introduces that the landscape pattern on the 1 yuan note is "West Lake in Hangzhou"; The coin of 1 yuan is silvery white with peony or chrysanthemum patterns. )

B, let's look at 50 cents RMB again. What did you find? (The teacher summed up the children's answers and introduced that the characters on the 50-cent note were "Aunt Dong and Miao"; The 50-cent coin is yellow with a plum blossom pattern. )

C, let's look at the RMB of 20 cents. What did you find? (The teacher summed up the children's answers and introduced that the figure pattern on the 20-cent banknote is "Aunt Yi and Han"; There are no coins in the 20 cents. )

D. finally, look at the RMB of 1. What did you find? (The teacher summarizes the children's answers and introduces that the character pattern on the 1 corner paper money is "Uncle Gaoshan Han nationality"; 1 dime is also silvery white, smaller and lighter than 1 yuan, with daffodils or chrysanthemums on it. )

2. Guide children to understand the exchange relationship of RMB. The teacher asks questions, and the children operate the game coins according to the questions, and talk about the results of the operation:

A, if I use 1 to change 2 cents, how can I change it? (2 angles =2 1 angle)

B, if I use 1 angle and 2 angle to change 5 angle, how can I change it?

C. Do children know how many angles 1 yuan equals? (1 yuan = 10 angle)

D, if I change 1, 2,5 cents into 1 yuan, how can I change it? Encourage children to practice exchange in various ways. If the children say a method, the teacher will ask the whole class to practice. )

3. Play the game of buying and selling toys, and guide children to use the knowledge of RMB exchange.

A. Designate 9 children as "salespeople", and each group sells toys; Other children act as "customers", first moving chairs to the wall and then buying their favorite toys.

B, the teacher encourages children to buy toys with different prices, and reminds them to pay the bill when paying.

C. During the game, the teacher keeps patrolling to see if the children can correctly use the exchange knowledge they have learned.

4. The game is over and the situation of the game is summarized.

A, please tell some children what they bought and how much they spent.

B. The teacher summarizes the game and points out the advantages and problems.

C. Conclusion: Today, we played a game of buying toys. In the future, when children and parents go shopping, they will use their brains to calculate accounts. What we have learned can only be truly learned if we can use it.

Comments:

1. RMB is a familiar item in children's life, and children are more interested in it; With the growth of age, children have the opportunity to shop alone and should know some simple knowledge of RMB exchange; So choosing this content is suitable for children's development.

2. The teacher pays attention to guiding children to observe the patterns on the RMB, not just knowing the numbers on the RMB, which enriches children's understanding of the RMB; Teachers pay attention to let children communicate with each other and tell their own findings, instead of directly explaining and instilling them, which mobilizes children's initiative in learning.

3. Guide the children to understand the exchange relationship of RMB step by step, and let each child operate the game currency personally, which will not only impress the children, but also facilitate the teachers to observe and understand whether the children really master the exchange relationship of RMB.

4. The little game of "buying and selling toys" designed by the teacher provides children with situations and opportunities to practice RMB exchange, so that children can use what they have learned in pleasant games.