236-240
8-F. 5 Exponents with decimal and fractional bases
8-F. 11 Power Rule
8-F.13 Identify equivalent expressions involving exponents
8-F.15 Positive and negative square roots
8-F.17 Relationship between squares and square roots
8-F.21 Estimate cube roots
Khan Academy: Mappers
8-W. 5 Properties of equality