David A Adler

Demystify geometry with this primer on shapes that will have young builders everywhere on to their next towering project. Comical cats and dogs guide kids through the essential characteristics of squares, rectangles, parallelograms, rhomboids, and other quadrilaterals. Angles and degrees are explained in accessible terms and useful visuals. Kids will get a handle on geometric vocabulary and can try out plenty of hands-on activities that will help...

Cam uses her photographic memory to track down a missing gift sent by Grandpa Shelton to Eric's father, who is finally graduating from college.

It can be surprising which objects float and which don't. An apple floats, but a ball of aluminum foil does not. If that same ball of foil is shaped into a boat, it floats! Why? And how is it possible that a huge ship made of steel can float? Answering these questions about density and flotation is David A. Adler's clear, concise text, paired with Anna Raff's delightful illustrations. Activities that demonstrate the properties of flotation are included....

Cam uses her photographic memory to catch a thief disguised as a ghost.

When she notices some bones missing from a dinosaur skeleton exhibited in the museum, a young girl with a photographic memory tries to discover who has been taking them and why.

A brief account of the life of the "Father of Our Country."

On Green Day, Cam and her classmates discuss ways to protect the environment, but when money collected for the school's new skylights disappears, Cam uses her photographic memory to solve the mystery.

Using her excellent memory, Cam Jansen, aided by her friend Eric, investigates the disappearance of Mrs. Scott's valuable pearl necklace during a charity brunch.

Introduces children to American currency values and the basics of adding and subtracting money.--

Cam and her friend Eric chase the thief of Aunt Katie's wallet through an amusement park and find themselves involved in another case requiring their special detective skills.