David A Adler

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.

Fifth-grade sleuth Cam Jansen uses her photographic memory to solve a monkey smuggling mystery at the city zoo.

When Cam Jansen and her friend Eric go the music store at the mall for the latest CD by the Triceratops Pops band, Cam uses her photographic memory to foil a crime.

Introduces the seven symbols and their values, shows how to add and subtract to make numbers. Teaches how the symbols interact and about the bar across the top and the open box that are used for larger numbers. Shows Roman numerals in real life settings: on clocks, in books, and on buildings.

A comprehensive introduction to the life and achievements of the heroic former slave details how after managing her own escape, Harriet Tubman returned thirteen times to guide other slaves to freedom along the Underground Railroad, in a portrait that also relates her subsequent contributions as a wartime cook, nurse, spy, and suffragist.

Tells the story of the enslavement of the Children of Israel by the pharaoh, the coming of Moses, the ten plagues that struck Egypt, and the delivery of the Children of Israel from slavery.

We can't see magnetism, but it's everywhere around us - even the Earth is a giant magnet! Adler covers the basics of magnetism, explaining terms such as attraction, pole, electromagnetism and force.

When Mo and his dad join in a volleyball game at the beach and the score is tied, it is up to Mo, the smallest boy on the team, to secure the game-winning point.

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.