A science book looking at machines and physics principles that help us work better.
Hi, I'm Arnold. I'm one of the kids in Ms. Frizzle's class. Every time the Friz announces a field trip, I hope it will be a normal outing - not like the magical ones we usually have. When our class started our unit on food chains, my cousin Janet came to school with me. No way did I want to go on a field trip with Janet along! But when the Friz walked in wearing a dress covered with plants and …
Answers demanding questions in an unrivalled child-friendly and informative style about inventions'
A group of people has developed an efficient, healthy way to cook using the sun. Solar cooking is good for the environment and is also extremely helpful to people in certain countries. Why is solar cooking important to some countries? How can solar cooking help save lives?