Tools/raw materials: paper, pens, rulers, teaching materials.

1 First of all, write the theme-the understanding of trees.

2. Secondly, draw four arrows with a ruler and take the title as the first branch according to the textbook.

3. Then draw a few arrows behind the title, put the subtitle under the title, and draw a few more subtitles.

The remaining three paintings are the same as the first one.

The last step is to box them with a ruler to achieve the purpose of beauty.