Activity goal: 1. I like to solve problems with my brain and experience the fun brought by math games. 2. On the basis of reviewing the comparison methods of overlapping correspondence, learn to compare the number of two groups of objects by using and placing corresponding methods. 3. Improve the ability of observation and judgment, correspondence and comparison, hands-on operation and thinking flexibility. Activity preparation: 1, knowledge and experience preparation: children have learned to compare the number of objects by overlapping correspondence. 2, material preparation: teaching AIDS: carding map, pig card, red and green round card. Learning tools: several red and green apple cards, one plate and one operator, one yellow cat mother card, and several white and yellow kitten cards. Activities: First, introduce "visiting mother pig's house". Guide children to review and compare the number of objects in the two groups by overlapping method. ) 1, wear a tag. Teacher: Today, let's play a game. The teacher plays the role of mother cat. How many cards does mother cat hang? When children are kittens, how many kittens hang cards? (Many) every child hangs an elevator. Are there as many cards as children? 2. find a seat. Review the overlapping method and compare the number of chairs with the number of kittens. ) teacher: are there as many kittens and seats as we have to go to mother pig's house by car? Second, the game "guest". (Guide children to learn to compare the number of two groups of objects in two ways. (1) Explore the game: "Send Red Apples". (Guide children to explore the methods of comparing the number of piglets and red fruits independently, and learn and put the corresponding comparison methods) 1. Doubt: We send red apples to pigs. One pig for one. I don't know if it's enough Are there as many pigs as red apples? 2. Children independently explore and compare the number of piglets and red apples.