I was on youtube the other day and found this funny video a school in Ohio made on exponents. The teacher in the video reviews the product rule (<a href="http://www.codecogs.com/eqnedit.php?latex=x^m * x^n = x^m*n" target="_blank"><img src="http://latex.codecogs.com/gif.latex?x^m * x^n = x^m*n" title="x^m * x^n = x^m*n" /></a>), the quotient rule(<a href="http://www.codecogs.com/eqnedit.php?latex=(x^m)/(x^n) = x^m-n" target="_blank"><img src="http://latex.codecogs.com/gif.latex?(x^m)/(x^n) = x^m-n" title="(x^m)/(x^n) = x^m-n" /></a>), the power rule(<a href="http://www.codecogs.com/eqnedit.php?latex=(x^m)^n = x^m*n" target="_blank"><img src="http://latex.codecogs.com/gif.latex?(x^m)^n = x^m*n" title="(x^m)^n = x^m*n" /></a>) and the negative exponent rule(<a href="http://www.codecogs.com/eqnedit.php?latex=x^-m =1/(x^m)" target="_blank"><img src="http://latex.codecogs.com/gif.latex?x^-m =1/(x^m)" title="x^-m =1/(x^m)" /></a>). Voila!