George and Harold, and their doubles, Yesterday George and Yesterday Harold, have a good thing going. Two of them go to school, while the other two hide in the tree house and play video games all day-then they switch! But when their malicious gym teacher, Mr Meaner, creates a method of mind control that turns their fellow students into attentive, obedient, perfect children, the future of all humanity will be in their hands!

After spotting a miniature pterodactyl, Danny and his best friend Lin encounter a mysterious invention that shrinks them down to the size of a raisin.

Frankie Sparks is excited about her town's team sled design contest but while she knows a lot about building a sled, she has much to learn about building a team. Includes information on the design process and a challenge.

"This is an illustrated book of projects and activities and general information to get young children interested in engineering. It is written by Ann Beaty, the author of the picture book ROSIE REVERE. It is illustrated by David Roberts, the illustrator of the picture book ROSIE REVERE. It is 96 pages and has full-color illustrations."--

Mr. and Mrs. Green, a loving alligator couple, practice magic tricks, bake cookies, and dream up new inventions.

Nine remarkable men produced inventions that changed the world. The printing press, the telephone, powered flight and recording and many others have made the modern world what it is. But who were the men who had these ideas and made reality of them? As David Angus shows, they were very different – quiet, boisterous, confident, withdrawn – but all had a moment of vision allied to single-minded determination to battle through numerous prototypes...

With the town's annual Grand Festival of Inventions coming up, Cleonardo is determined to invent something impressive to enter, something that will impress her inventor father Geonardo.

"On his regular walk one morning, Spike Carlsen realized there was an entire world outside his front door that he knew nothing about. How does that fire hydrant work, he wondered? Why are street lights shining more brightly than ever before? And, on a more personal level, why does an easy stroll around the neighborhood always leave him feeling more creative and spry, better able to take on the day? A simple walk around the block set Carlsen off on...

Earthmovers are huge because they were created to dig deep holes and to prepare land for new buildings and roadways. Construction companies often use them. With their large machinery and loud growls, earthmovers are hard to miss. There are different kinds of earthmovers, each built for a specific task, but they are all created to get big jobs done fast. Informative text and full-color photographs will delight budding engineers and machine enthusiasts....

The first time the term "tractor beam" was used was in 1931. Since then, tractor beams have been used in many science fiction books, movies, and TV shows to draw in spacecraft, people, and objects in space. This science fiction technology has become science fact. In 2015, scientists used sound waves to move tiny objects. Through reading about this and other modern technology, readers are engaged with incredible STEM information as well as their imaginations...