Get up in the morning and face the sun. Think with your head.

The front is east, the back is west, the left is north and the right is south;

Reach out your right hand and remember the prisons in the southeast and northwest;

Specify the orientation of the map, with north at the top and south at the bottom;

Left is west, right is east, children should distinguish.

There are some interesting math problems:

All three students are taller than each other. A said: I am taller than B; B said: I am shorter than C; Suppose I am taller than A. ..

() the highest, () the shortest.

2. Four children are weighed. A is heavier than B, B is lighter than C, C is heavier than A, and D is the heaviest.

The weight order of these four children is: () > () > () > ().

Xiaoqing, Xiaohong, Xiaolin and Xiao Qiang are taller than each other.

Xiaoqing said I was taller than Xiaohong; Kobayashi said that Xiao Qiang is shorter than Xiaohong; Xiao Qiang said: Xiao Lin is shorter than me.

Please write down your names in descending order: (), (), (), ().