Click on the links below to learn about powers and exponents:
Link #1-Mathgoodies
Link #2-EdHelper
Link #3-SoftSchools
Link #4-FactMonster
Link #6-Quia
Link#7-Classroom
Link #8-YouTube (10 minutes)
Link # 9-PHSchool.com ( video-Using Exponents)
Link #10-You Tube-Level II (6+ minutes)-includes negative exponents
Other
Link #1-Powers of Zero (video-3:34)
Link #2-Negative Exponents (video-5:12)
Also visit the page on scientific notation.