 Disasters at Sea (Disasters Up Close)For thousands of years, the perils of the sea have claimed uncountable numbers of victims. Bad weather, rocks and icebergs, equipment failures, human error, and many more types of tragedies have all sent ships to watery graves. While modern technology has made sea-going vessels safer and rescues easier, there still are terrible disasters that... |  | Inclined Planes and Wedges (Early Bird Physics)Focusing on the six simple machines--levers, wheels and axles, pulleys, screws, inclined planes, and wedges--this fun and informative series introduces young readers to several basic concepts of physics--such as work, force, gravity, and friction. Includes easy-to-do experiments, colorful photographs, clear text, and fun activities. Supports the... | | Screws (Early Bird Physics)You work every day. At home, you work in the kitchen. At school, you sharpen pencils. It may surprise you to learn that you also work during recess and at lunch. Playing and eating are work, too!
About the Authors
Sally M. Walker is the author of many books for young readers. When she isn’t busy writing and doing... |
