7.RP.A.1 Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units.
Here is a fun video about unit rates:
8th Grade: Last week most students did very well learning about rational vs. irrational numbers! This week we will start a three-week unit on exponents and how exponents are used in solving tasks in algebra.
8.EE.A.1 Know and apply the properties of integer exponents to generate equivalent numerical expressions.
Here is the first Khan Academy video about exponents: