"The characteristics of circles as well as how to find the radius, diameter, circumference, and area of a circle are explained and illustrated in this geometry picture book"--

Using a county fair, this volume explains how decimals, fractions, and percentages are calculated and used.

Huge numbers are hard to comprehend. This book explains quantities in terms children can understand. For example, one million dollars could buy two full pizzas a day for more than sixty-eight years.

"This picture book offers explanations of how to tell time, the difference between digital and analog time and AM and PM"--

David Adler explains the basic principles of floatation and density in a way that will really sink in.

"Two children learn about four different states of matter (solid, liquid, gas, and plasma) and what happens when matter changes form."--

Detective Jeffrey Bones helps solve the mystery of Grandpa's missing birthday present.

When Cam and Eric go on a field trip to the museum with their fifth grade class, Cam-with her photographic memory-makes an interesting discovery: dinosaur bones are missing from one of the exhibits. When no one believes them, they decide to catch the thieves themselves. As they stake out the library, a mysterious milk truck stops by. Cam knows something is wrong. The logo on the truck does not match the logo on the milk carton they drank from at lunch....

No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory!
Mysteries follow super-sleuth Cam Jansen everywhere she goes...even to a park with U.F.O.s in sight! Cam and Eric see flashing lights in the sky, and everyone thinks aliens have landed. But Cam knows there's more to it than meets the eye. Can she solve this unearthly mystery?

When Aunt Molly's wallet is stolen at the circus, Cam suspects that there's something not-too-funny going on under the big top. Is one of the clowns really a criminal?