Following the scientific process, this title provides instructions on how to conduct experiments that help students gain a better understanding of levers and pulleys.How long should your lever be? Will you need help from a friend to increase the amount of effort? And where, oh where, should your fulcrum be to make the job easiest? Next time you step into an elevator, think for a moment. Some elevators anbsp;...
|Title||:||Levers and Pulleys|
|Author||:||Dana Meachen Rau|
|Publisher||:||Cherry Lake - 2009-08-01|