Machines at Work
by Mary Elting
Publisher: Harvey House 1962
Number of pages: 100
People have always been able to work and build wonderful things, using just their muscles. And they can do a very great deal more when they use their brains, too. They can invent machines to make work thousands of times easier and faster.
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by John Blaine - Applewood Books
A non-fiction companion volume to the collectible Rick Brant Science-Adventure Series. This reprint includes easy-to-read chapters about codes and ciphers, slingshots and archery, microscopes and radios, tricks and games, and scientific experiments.
by John Cargill Brough - Griffith and Farran
To place before the youthful student a compact and concise compendium of the leading and most universally important branches of Science has been my principal object in the preparation of this little volume. Fanciful sketches illustrate these pages.
by Frank M. Chapman - D Appleton & Company
Birds are the greatest travelers in the world. The bird traveler asks help from no one. He has no use for locomotives, automobiles or steamships. He carries no chart and no compass, and he can go to some parts of the world still unknown to man.
This book is about science experiments that you can do in the home and experiments that you can nag your teacher to do in school. Featured experiments: Slime recipes; Red cabbage indicator; Pinhole Camera; Raisin Dance; and much more.