Sticker as reward...

Mother told him that he only entitled to get the sticker after he can read the whole Chinese word on that particular page. So far he only entitled to two stickers.

In order to prevent him from just memorizing the sentences instead of words. So after this exercise he can claim that he can read the whole page. Mother will break down the sentence word by word and write them in another blank paper to ask him to read aloud. He only can get the sticker after he passed this test. The purpose is to let him know that he needs to work hard for it.