Students practice grade-level mathematics on real utility quantities such as flow rates, tank volumes, and water bills, using the same formulas that appear on operator licensing exams.
A 50-minute grade 8 lesson comparing two fictional reverse osmosis membranes by graphing recovery rates as proportional relationships and reading slope as unit rate.
A grade 8 worksheet where students set up and solve systems of two linear equations to blend chlorine stock solutions to a target strength at a fictional treatment plant.
A 45-minute grade 8 lesson where students use overnight tank-level data to find a rate of change and initial value, build a linear function, and predict a target level.
A grade 8 math set where students write linear equations for two water-billing plans and solve the system to find the exact usage level where both plans cost the same.