Samuel Morse and the Telegraph (Graphic Library: Inventions and Discovery) (Inventions and Discovery)
by David Seidman
How Does 3D Printing Work? (Project Learning with 3D Printing)
by Ian Chow-Miller
Communication Inventions (Which Came First?)
by Jacqueline A Kaufman Ball
Wedges (Simple Machines (Creative Paperback)) (Simple Machines (Creative Library))
by Valerie Bodden
"A foundational look at wedges, explaining how these simple machines work and describing some common examples, such as shovels, that have been used throughout history"--Provided by publisher.
"Amazing photography accompanies engaging information about V-22 Ospreys. The combination of high-interest subject matter and light text is intended for students in grades 3 through 7"--Provided by publisher.
Put Pulleys to the Test (Searchlight Books (TM) -- How Do Simple Machines Work?) (Searchlight Books How Do Simple Machines Work)
by Roseann Feldmann and Sally M Walker
Machines in the Home (Discoveries & Inventions) (Discoveries & Inventions S.)
by Rebecca Weaver
This description of how machines in the home were developed and how they revolutionized the drudgery of housework is part of a series covering the history of science and technology. It is intended for students of 14 years and upwards, their teachers and students of social and economic history.
