There's another old saying that if you give a teacher an apple, she'll eat for a day; but if you teach her how to, um, "apple" she'll eat for the rest of her life. Or something.
So you think giving a teacher a book is a bit like teaching your granny to suck eggs, do you? But teachers love books, and even more than that, they love to encourage children to buy books. With its bright cheery chirpy cover, Tweet Treats will appeal to the kids as a gift, and its useful pages within will appeal to the teacher.
Actually, maybe you should give teacher an apple along with her copy of Tweet Treats and she can learn how to make something with that apple...