This is a great book to read to first grade! Most of them are experiencing losing a tooth and getting a visit from the tooth fairy. This book will get them excited for losing a tooth, but also teach them the importance of brushing teeth. This is a book I would read and teach a lesson on brushing teeth. There are so many cute lessons that go along with this book. There is even a really cute math lesson where the first graders counted how many teeth the moose looses and allow them to create a moose independently so that no one moose is the same.