Exponents

here's a link to help you learn about how exponents work.

http://www.ixl.com/math/grade-7/understanding-exponents

Here's a video of a classroom teacher using a smart board to teach exponents.  It review the vocabualry that is needed to comprehend the skill.

http://www.schooltube.com/video/9fd26633451447fc8d3e/

This one will hel pyou practice the skill of evaluating exponents.

http://www.ixl.com/math/grade-7/evaluate-exponents