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What are the knowledge points in Unit 1 "Position and Direction" of Mathematics in Volume 2 of Grade 3?
1. According to a certain direction, find out the other three directions: south facing north and left east facing west.

2. The plan is generally drawn in the directions of upper north, lower south, left west and right east. First select the observation point, draw the selected observation point in the center of the plan, then determine the direction of each object relative to the observation point, and draw it on the paper in the order of up, down, south, left, west, right and east.

3. To describe the walking route, we must first determine our own position, take ourselves as the center, determine the direction of the target and the surrounding things according to the rules of going up north and down south, left west and right east, and determine the walking route according to the direction and distance of the destination.

4. The direction between east and north is northeast; The direction between east and south is southeast; The direction between west and south is southwest; The direction between west and north is northwest.

Take the starting point as the center, first determine the direction of the destination and see which road can reach the destination. Then, in order, use eight locative words to describe it.