Service Alert
Website maintenance April 24 10pm ET
On Wednesday April 24 at 10pm ET the CELA website will be unavailable for about 15 minutes for planned maintenance.
On Wednesday April 24 at 10pm ET the CELA website will be unavailable for about 15 minutes for planned maintenance.
Showing 41 - 60 of 2325 items
By Dennis B Fradin. 1997
A history of astronomy from the earliest civilizations, when man observed the stars with only the naked eye, to 1997,…
when the Hubble Space Telescope orbited the earth. Describes the discovery of planets and other contributions by early and recent scientists. Grades 5-8. c1997.By Trudee Romanek. 2002
If you live to be 70, you'll have spent 23 years sleeping! Uncover the mysteries about the body's clock, the…
stages of sleep, what happens when you dream and more. Includes activities. Grades 4-7. 2002.By Elizabeth MacLeod. 2002
On December 17th, 1903, Wilbur and Orville made the first controlled powered flight. Although Wilbur and Orville were self-educated, their…
combined ingenuity, ability to observe, determination, and imagination propelled them toward their goals. A look at the lives of Wilbur and Orville Wright. For readers in grades 4-7. 2002.By Angela Royston. 2001
By Melvin Berger, Gilda Berger. 2001
By Milton Meltzer. 2004
The invention of the railroad led to great changes in human history, though it was also connected to ruthless exploitation…
of workers, extermination of Native Americans and the buffalo, corruption among public officials, and violent strike-breaking tactics used by greedy railroad owners. Describes short and transcontinental train lines and how they shaped the economy, agriculture, and the growth of new towns. Grades 4-7 and older readers. 2004.By Albert Marrin. 2009
Discusses causes and effects of the environmental and social disaster that swept across the Great Plains in the 1930s during…
the Great Depression. Explains that farmers and ranchers unwittingly caused conditions that led to the dust storms and the loss of the land they had settled. Grades 5-8. c2009.By Larry Verstraete. 1997
Did you know that the inventor of Nike sneakers got the idea for his high-tech soles from a waffle iron?…
Or that Chester Greenwood, the inventor of the earmuffs, came up with them only after he'd frozen his ears while skating? The true story of hundreds of fascinating inventions, some the results of determination, some inspired by strange circumstances, and many that happened entirely by accident! Grades 4-7. 1997.By Jack Myers. 2000
Discusses the scientific detective work that must be done to answer questions on animal behaviour. Explores how cats purr, how…
seals can dive so deep, why pandas are hooked on bamboo, why alligator eggshells are covered with tiny cavities, and what happened to the woolly mammoth. Grades 4-7. 2000.By Jay Ingram, Harvey Chan. 1988
By Bill Slavin, Jim Slavin. 2005
A look at how 69 familiar items are made, including baseballs, guitars, teddy bears, CDs, books, dental floss, ice cream,…
and peanut butter. The last section describes the raw materials used, such as aluminum, glass, paper, petroleum, and rubber. Historical notes provide background - did you know that the earliest form of football was played with a pig's bladder in Virginia in 1609? Grades 4-7. 2005.By Adrian Dingle. 2008
The Maker Movement is where all the next great inventions and innovations are happening. Mark Hatch describes the remarkable technologies…
and tools now accessible to you, and shares stories of how ordinary people have devised extraordinary products, giving rise to successful new business ventures. Senior High and older. 2013.By Gregory Mone, Neil DeGrasse Tyson. 2019
By Titus. 2001
Petit traité européen rigolo qui propose de donner aux objets qui nous entourent tout le crédit qu'ils méritent. Parions que…
vous ne les regardez plus de la même façon après avoir lu ce livre... Années 5-8. 2001.By Susan Dudley Gold. 1999
Examines the weather event known as El Niño beginning with facts and fantasies about it. Discusses the local and global…
effects of this warm current of water that sometimes occurs off the west coast of Ecuador around Christmas. Also includes information on its cooler counterpart, La Niña. Grade 5-8.1999.By Daniel Cohen. 1998
Introduces the history and possible future of the science of cloning and gene therapy, and the social consequences of such…
experiments. Includes information on Dolly the sheep and the possibility of replicating dinosaurs. Junior High. c1998.By Robert J Cone. 1998
Explains the concepts and operating principles behind seventeen high-tech devices and systems that affect daily life. Covers electromagnetism, communications, and…
measurement concepts, discussing their development, applications, and future prospects. Senior High. 1998.In "Exploring the sky by day," Dickinson discusses types of clouds and precipitation, storms, aurora borealis, and the sun and…
moon. "Exploring the night sky" covers our solar system, comets, black holes, quasars, and the night sky from Earth. Grades 5-8. c1988.By Hans Baumann. 1962
The discovery of the cave at Lascaux in 1940 by four boys and a dog is described by the author,…
who also tells of other picture caves discovered by boys and girls. For junior and senior high readers. 1962. Uniform title: Höhlen der grossen Jäger.