From levers to pulleys, simple machines make our lives easier.Rookie Read-About Physical Science series introduces the youngest readers to physical science concepts. Each book features critical-thinki
Imagine living and working on a ship with no windows for months on end. Now imagine that ship is sailing underwater! How Things Work Submarines introduces readers to the technologies that make life un
It starts with a tiny egg and ends with a gorgeous winged insect. Read all about the amazing changes a monarch butterfly undergoes during its life cycle, and learn how it fits into its ecosystem.
Ribbit. Ribbit. Some young creatures look just like their grown-up parents. Otherslike frogslook completely different. Who could look at a tadpole and picture the hopping, insect-catching adult to com
How do you know its spring?Through vivid photos and engaging nonfiction text, this fun and fact-filled Rookie Read-About Science book answers the question, How do you know its spring? Covering everyth