Purple Math
Purplemath: Negative Exponents
This resource covers negative exponents and demonstrates how to simplify expressions containing them. Explains why "to the power zero" means "equals 1".A negative exponent just means that the base 'x' is on the wrong side of the fraction...
Texas Education Agency
Texas Gateway: Applying the Laws of Exponents: Verbal/symbolic
Given verbal and symbolic descriptions of problems involving exponents, the student will simplify the expressions using the laws of exponents.