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The 14th of Formula Teaching —— Position and Direction on Plane
"Position and direction" is the content of Unit 1 in the second volume of Grade Three. My formula is "four decisions"-setting standards, goals, positions and directions.

If Xiao Ming is in Xiaohong's (? ) direction.

? Setting standards refers to determining who is the observation center first. The above topic "Little Red" is the observation center. After determining the observation center, that is, the "standard", we can draw a "ten" direction line in the center (in our minds) to serve the later observation and thinking.

? Setting a goal is to make it clear that this mathematical question is the direction of asking "Who" and the goal of observation is "Who". As mentioned above, the observation goal is Xiao Ming, and many students easily confuse the "goal" and "standard", so the final answer is upside down.

Positioning is to define "up, down, left and right" of "target" relative to "standard". There is no direction on the plan, but we use our eyes to observe the corresponding "position" to determine the "direction"

Setting the direction is to convert the observed target "position" into "direction" according to the principle of "north, south, left and right".