 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... | | Wheels and Axles (Early Bird Physics Series)You work every day. At home, one of your chores may be painting. At school, you work when you sharpen your pencil. You work at snack time. And you work when you race in gym. Eating and playing 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... | | 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... |
