How to compose poems in the first volume of sixth grade comprehensive study?

Such as kua teacher: "kua teacher"

teacher

You are like a piece of white chalk.

You are like an old banana.

You are like a long candle.

teacher

You teach us knowledge.

You gave us nutrition.

You have selflessly illuminated us.

teacher

You don't know.

Your hair is covered with silver.

Crow's feet also occupy your forehead.

teacher

I praise you.

Although it's not very well written

But I hope to be adopted ~