Grades 6–7 Math problem set
Water Tower Height and Pressure: Unit-Rate Problems
Eight problems that turn the town water tower into unit-rate practice, converting height to pressure with the real 0.433 psi-per-foot rule operators use.
Water Math
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.
647 materials · refine in the catalog
01 Choose a grade
- Kindergarten 21 materials
- Grade 1 23 materials
- Grade 2 21 materials
- Grade 3 41 materials
- Grade 4 41 materials
- Grade 5 41 materials
- Grade 6 73 materials
- Grade 7 71 materials
- Grade 8 71 materials
- Grade 9 61 materials
- Grade 10 61 materials
- Grade 11 61 materials
- Grade 12 61 materials
02 Editor's picks
Grade 10 Project
Duncannon Elevated Tank: A Storage and Pressure Design Project
A four-session grade 10 project where teams size an elevated tank for a fictional town to meet storage, pressure-range and budget limits at low cost.
Grade 10 Project
Fernbrook High Rainwater Cistern: A Sizing Design Project
Grade 10 teams size a 3,000-gallon rainwater cistern for a fictional school, pricing the tank by its surface area to meet a $5,000 budget and a 12-foot pad.
Grade 11 Lesson plan
Sable Crossing's Growth: Timing a Treatment Plant Expansion
A grade 11 lesson where students model a fictional town's maximum-day water demand exponentially and use logarithms to time a treatment plant expansion.
Grade 12 Math problem set
Halbrook Water: Uniform Versus Inclining Block Rate Break-Evens
A grade 12 set comparing a uniform water rate with a three-block piecewise rate: two break-evens, interval answers, and a year of seasonal bills.
Grade 12 Project
Sandalford's New Water Source: Desalination, Reuse, or Conservation
A grade 12 project where teams test desalination, reuse, conservation and a hybrid against supply and budget inequalities, then recommend one to a board.