A simple yet sophisticated look at things both similar and different is presented in this clever, attractive title. Like a chain of interconnected Venn diagrams, the concept on each spread directly links to the next page. An airplane, a bird, and a group of bees are examples of things that fly. Turning the page to striped things, the bees remain, but the others are replaced by a zebra and banded snake. Set theory is attractively portrayed with bold cutouts in basic red, green, yellow, blue, and black and white. Varying page layouts and clever groupings make this concept book a striking circular read. (Ages 2–5)