David A Adler

When Cam Jansen, her father, and her friend Eric go to the library, Cam finds a mystery to read. But soon, she has a mystery to solve. Her father's shopping list has disappeared. Cam decides to use her amazing skills to investigate, and with a click, she puts her photographic memory into action. Where was the list seen last? And where can it possibly be?

When eight-year-old sleuth Cam Jansen and her friend Eric go to a birthday party, she uses her photographic memory to solve the puzzle of the dinosaur count.

"Two kids explore the ups and downs of gravity in this introduction to physical science"--

"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"--

"An introduction to the physics of light for young readers, with an overview of photons, transparency, the electromagnetic spectrum, and the mechanics of reflection"--

Cam investigates when a thief steals her mother's video camera and a tape containing footage of a big scary snake.