Mathematics is a difficult method for students, and some mathematical problems in directions and positions are abstract for students, so they can be used as mind maps. Tools/materials: Lenovo Tian Yang M26 12d, Windows7 version 6. 1, Office PPT20 13.

1, Start-Draw-Basic Shape-Select a cube to draw a cuboid, and input: direction and position.

2. Drawing tool-Format-Insert shape-Select arc-Draw arc up and down the cuboid-Set the shape outline to red, with a thickness of 3 pounds.

3. Insert-Shape-Basic Shape-Select an ellipse and draw a circle on the other side of the arc-Enter the southeast, northwest and direction identification methods respectively.

4. Start-draw a line, select a single arrow to connect the circle, and then select a rounded rectangle to draw the third branch text box to connect the arrow.

5. Select all shapes-Start-Fill shapes with no fill color-Shape outline is red-Font color is black and bold.