Second, the teaching goal: 1, to cultivate students' interest in learning.

2. Let the students understand the numbers 2 and 3 and find out the answers.

Third, teaching difficulties: 3+2 math problems

Fourth, teaching preparation: courseware, pictures and objects.

Fifth, teaching methods: observation learning method.

Six, teaching steps:

Seven, teaching design:

Eight, teaching reflection:

Step six, step seven and step eight, you can play by yourself.