Teresa's grandfather tells her that time travel is possible. Can he be serious? How can it be true? CSI Chapters is a leveled collection of 25 original chapter books in...
Uggles hate Wopples, and Wopples hate Uggles. That's just a fact. So what happens when Utterly Uggle and his mother come face-to-face with some Wopples in outer space? CSI Chapters...
Have you ever heard of an atoll? It's a strange tropical island like no other! How are atolls formed, and why are they now under threat? There are big changes...
How do some bugs grow so big? Why are some bugs so dangerous? Take a look to learn about some truly big, "bad" bugs! CSI Chapters is a leveled collection...
Can one crash affect the entire world? It can if it's a stock market crash! What is the stock market? Why does it sometimes crash? Find out how past crashes...
Hissy fits come in all shapes and sizes. Mostly, they're just for show, but it pays to get out of the way when some creatures flip their lids! CSI Chapters...
If you think that flying in bad weather is scary, keep in mind the "ice pilots." They fly in and out of some of the world's most dangerous places! CSI...
This book holds infinite possibilities and ideas. How big is a snowflake? How small is a quark? Can a grain of sand really hold another world inside it? Take a...
