inventions

On a two-day train trip to enter his invention in the National Science Competition in Washington, D.C., fourteen-year-old Steven "Steel" Trapp, possessor of a remarkable photographic memory, becomes embroiled in an international plot of kidnapping and bribery that may have links to terrorists.

Photographs and text explore such inventions as the wheel, gears, levers, clocks, telephones, and rocket engines.

Answers a wide variety of questions about the invention of common household items.

Profiles more than thirty inventions, describing why they were invented and including information on how they have influenced human life; and includes biographical information on a number of inventors.

Presents an illustrated discussion of medieval technology, including the construction of cathedrals, the use of masonry, windmills, waterwheels, printing presses, military machines, and timekeeping, practices in sailing, agriculture, and medicine, and more.

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.

"It's a new school year with the same old problems: the school is going to run out of money! But a local engineering competition might just keep them funded for another year. Can Millie and her friends Pearl and Halinka invent a way out of the mess? With some guidance from their eccentric headmistress Miss Bunsen, anything seems possible"--OCLC.

Thomas Edison teaches Fiona and Finley about inventing.

Benjamin Franklin teaches Fiona and Finley about inventing.

Summarizes 1000 notable inventions and discoveries of ancient and modern times, from 3,000,000 B.C. to the beginning of the twenty-first century A.D. Presented in chronological order.