5. The Negative Exponent Rule
Video: https://www.youtube.com/watch?v=gNhVocsgQiE
Mathisfun Quiz: http://www.mathsisfun.com/algebra/negative-exponents.html
Mixed Practice with Negatives: http://www.regentsprep.org/regents/math/algtrig/ato1/posnegzprac.htm
Another Video: https://www.youtube.com/watch?v=wvjixzHKyqU
Quiz: http://teachers.henrico.k12.va.us/math/hcpsalgebra1/Documents/examviewweb/ev7-1.htm
Gizmos: https://www.explorelearning.com/index.cfm?method=cResource.dspDetail&ResourceID=305