First, the teaching content: People's Education Press Primary School Mathematics Sixth Grade Volume 7 1 page Example 2.

Second, the teaching objectives:

1, through the inquiry process of "pigeon hole principle", we can further understand the "pigeon hole principle" and use it to solve simple practical problems.

2. With the help of division with remainder, students' reasoning ability is further developed and abstract mathematical thinking is formed.

3. Feel the joy of research in the process of inquiry. Third, teaching focus: further understand the "pigeon cage principle" through the inquiry process.