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What if Everybody Did That?
by Ellen Javernick
This one should come standard with every primary classroom. The book goes through a day with a little one who does things without thinking, like feeding zoo animals despite the warning signs not to. He's got that same feeling that lots of kids do - that their actions won't make that big of a difference. But the community helpers in this book get him to think of what would happen if everybody did that.
Great way in introduce rules on the first day! Even middle schoolers love picture books and story time.