David A. Adler

"Mo is the youngest kid on the Robins football team. The kids on the rival team tease him for being a 'butterfingers' who's too tiny to catch the ball. But Mo's coach has a plan up his sleeve to turn Mo's little size into a big win for the Robins"--

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...

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.

Baseball season has arrived and Mo Jackson is all set to play with his team, the Lions. But Mo always bats last, and he always plays right field-- and no balls ever come to right field. Mo wants to get a home run, but he keeps striking out. His team is losing! Will Mo ever get his chance to help the Lions win?

When fifth-grader Cam notices that the prizes for the most difficult game at the school carnival are rapidly disappearing, she uses her amazing photographic memory to investigate.

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

When Cam Jansen and her friend Eric uncover a mystery while selling fudge door-to-door to raise money for the local library, Cam uses her photographic memory to foil a crime.

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.

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.