Understanding the southeast and northwest, this lesson is the first lesson of the third grade position and direction unit of mathematics published by People's Education Press. Ask students to know the four directions of east, south, west and north according to the specific situation. They can identify the other three directions according to the given directions of east, south, west and north, and use these words to describe the direction of objects.

In order to break through the difficulties of this course, the micro-course is divided into four parts: 1. Introduce the method of identifying the direction. 2. Demonstrate the process of students standing in the middle aisle of the campus to identify the four directions of the campus. 3. Combine the campus observation process to clarify the relationship between directions. 4. Expand your knowledge.