I am a fifth-grade student. My classmates laughed at me for being fat and didn't play with me. Let's do something to make me slim down and let everyone play with me.

If your classmates decide whether to make friends with you only by your appearance, then this kind of friend is no problem. I think the reason why you can't teach your friends may be that you feel inferior because you are fat, and then you are unwilling or afraid to talk to people around you. Make yourself cheerful and confident ~ I was fat when I was a child, but it's not impossible ~ Nothing, someone will always appreciate you!