1, through the exploration of the problem situation, enable students to draw their own 9 plus several methods on the basis of existing experience; Make students understand the method of "add up to ten" and the thinking process of "9 plus several" carry addition, and calculate 9 plus several correctly with their favorite methods.

2. Cultivate students' observation ability, cooperation and communication ability, hands-on operation ability, and the ability to initially ask and solve problems, so as to expand students' thinking and cultivate innovative consciousness.

3. Stimulate students' interest in learning mathematics in learning activities.

course content

The contents of the textbook on pages 96 ~ 97 and the exercises 17 1 ~ 3.

Prepare teaching AIDS and learning tools

Media courseware, prepared by teachers and students together 13 great.

Teaching design

Create situations, set doubts and stimulate interest.

Children, October is the sports festival in our school. Our school not only held a grand opening ceremony, but also held a school sports meeting. Look, (showing the picture of the guard of honor), with the loud singing, the children in our class walked into the playground with dignity. The game has already started. Look at the excitement on the playground (show the theme map)! The second-grade 60-meter running final is being held on the runway, and there are skipping rope, kicking shuttlecock and long jump in the center of the playground. In the stands around the playground, students are cheering for the athletes participating in the competition. In order to quench the thirst of athletes, they also prepared some drinks and drank some. At the end of the game, Xiao Ming asked, "How many boxes are there?"