7th grade: We continue to use variables to represent quantities in a real-world or mathematical problems, and construct simple equations to solve problems by reasoning about the quantities.
8th grade: We continue to use functions to solve tasks. Students will graph functions from equations and interpret graphs to create equations. Great on-line tool for graphing at Desmos.com
Both: We also will work on a project where students build a quiz game to review formulas and measurement conversion.