David A Adler

The Cam Jansen books are perfect for young readers who are making the transition to chapter books, and Cam is a spunky young heroine whom readers have loved for over two decades. Now the first ten books in the series have updated covers that bring new life to these perennial best-sellers. Old fans and new readers will love Cam's cool, modern look!

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 the community hobby show. Cam and Eric are checking out a sports memorabilia booth when a baseball autographed by Babe Ruth disappears. Can Cam catch the thief and recover the Babe's ball?  
The Cam Jansen books are perfect for young readers who are making the transition

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On Field Day, Mo swims a lot faster than he knew he could, not because his team might win but because a fish keeps nibbling his toe.

No mystery is too great for super-sleuth Cam Jansen and her amazing photographic memory! 
Can Cam help catch the diamond thief? Cam and her friend Eric are sitting at the mall when the jewelry store is robbed. Cam sees the thief, but the police arrest the wrong person. Now it's up to Cam to catch the real criminal!
The Cam Jansen books are perfect for young readers who are making the transition to chapter books, and Cam is a spunky...

When a thief takes the box office money at the school play, Cam uses her photographic memory to solve the mystery.

Kids use simple machines every day without realizing it. Teeth are wedges and so are knives, forks, and thumbtacks. Many toys such as slides, which are inclined planes, and seesaws, which are levers, are also simple machines. Two appealing kids and their comical cat introduce levers, wheels, pulleys, inclined planes, and more, and explain how they work. This lively introduction to physics will get kids excited about how simple machines simplify our...

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.