Grade 12 Math problem set
Highmarsh Reservoir Water Budget and Days of Supply
A grade 12 science problem set on a fictional reservoir: students move between acre-feet, gallons, and MGD to find net drawdown and how many days of supply remain.
Water Science · Grade 12
These materials teach earth science, chemistry, biology, and physics through water systems, from the water cycle to treatment chemistry.
56 materials written for this grade · refine by type, topic, or standard in the catalog
Grade 12 Lab / experiment
Thermal Plume Mixing at the Kelverne Station Outfall
A grade 12 science lab in which students mix warm and cool water at three ratios, predict each final temperature with an energy balance, and test the prediction.
Grade 12 Math problem set
Kingsley Cove Brackish RO: Recovery and Mass Balance
A grade 12 problem set on a fictional reverse-osmosis plant, finding recovery, salt rejection, a brine mass balance, concentration factor, and daily treatment energy.
Grade 12 Project
Aquifer Storage and Recovery for the Lattimore Basin
A grade 12 science capstone in which students test whether winter surplus water can be stored underground, then defend a recommendation to a fictional agency board.
Grade 12 Worksheet
Effluent Toxicity and Dilution at the Marledge Outfall
A grade 12 science worksheet on whole effluent toxicity: students find the instream waste concentration, interpolate an LC50, and convert it to toxic units.
Grade 12 Worksheet
Filter Loading and Backwash Rates at the Marrowbrook Plant
A grade 12 science worksheet using operator math to find filter loading and backwash rates at a fictional plant and check them against the turbidity standard.
Grade 12 Lesson plan
Darcy's Law and the Merrifield Aquifer
A 50-minute grade 12 lesson using Darcy's law to compute groundwater flow, seepage velocity, and contaminant travel time for a fictional town's confined aquifer.
Grade 12 Math problem set
Primary Clarifier Detention and Overflow at Netherford
A grade 12 science problem set sizing a fictional primary clarifier: volume, detention time, surface overflow rate, BOD removal, and the pounds of BOD removed per day.
Grade 12 Reading passage
Nutrients as Pollutant and Resource: The Wexford Lake Story
A grade 12 science passage on how nitrogen and phosphorus both pollute waterways and serve as recovered fertilizer, told through a fictional lake's recovery.
Grade 12 Worksheet
Alum Coagulant Dosing at the Penhallow Treatment Plant
A grade 12 worksheet applying the pounds formula, flow conversions, and turbidity removal efficiency across a fictional plant's coagulation and disinfection train.
Grade 12 Math problem set
Mid-Section Gauging on the Denbrook and a Withdrawal Limit
A grade 12 science problem set in which students compute stream discharge from nine measured verticals, then test a town's intake against two permit conditions.
Grade 12 Math problem set
Pinehaven Watershed Water Budget: Precipitation to Supply
A grade 12 problem set turning a fictional watershed's rainfall into acre-feet and gallons, then splitting it into evapotranspiration, runoff, and recharge.
Grade 12 Worksheet
Ravenglass Dam Hydropower: Head, Flow, and Energy
A grade 12 physics worksheet using the hydropower equation to find power, daily energy, and capacity factor for a fictional dam, with a drought sensitivity case.
Grade 12 Math problem set
Sizing a Bioretention Cell at Redmarch Commons
A grade 12 science problem set that takes a redevelopment site from percent impervious to a treatment volume, a cell footprint, a drawdown time, and a solids load.
Grade 12 Lesson plan
Corrosion Control at Rothbury: pH, Alkalinity, and Lime Dosing
A 55-minute grade 12 lesson on corrosion control: students calculate lime feed rates and explain how raising pH and alkalinity keeps lead and copper out of tap water.
Grade 12 Reading passage
How Microbes Remove Nutrients at Rushmere Reclamation
A grade 12 science reading passage on how bacteria strip nitrogen and phosphorus from wastewater, framing nutrients as both a pollutant and a recoverable resource.
Grade 12 Lesson plan
The Sablefield Polishing Wetland: Loading and Nitrogen Removal
A grade 12 science lesson on treatment wetlands, with handout problems on hydraulic loading rate, areal nitrogen loading, detention time, and removal efficiency.
Grade 12 Lesson plan
Tamarack Basin Drought Model: A Reservoir Water-Budget Lesson
A 55-minute grade 12 lesson where students build a spreadsheet water-budget model of a fictional reservoir and test how conservation extends the days of supply.
Grade 12 Worksheet
Rational Method Runoff for a Thorncliff Development
A grade 12 science worksheet applying the rational method to a fictional parcel, comparing peak runoff before and after paving and sizing the detention it needs.
Grade 12 Lab / experiment
Conductivity as a Salinity Proxy: A Calibration Lab
A grade 12 lab building a calibration line between salt concentration and a meter reading, then estimating a fictional reservoir sample's salinity from it.
Grade 12 Lesson plan
Irrigation Efficiency and Water Savings in Verrand Valley
A 50-minute grade 12 science lesson where students convert irrigation depth to acre-feet and gallons and compare the water a fictional farm saves by switching to drip.
Grade 12 Worksheet
Disinfection CT and Baffling at the Whitcombe Clearwell
A grade 12 science worksheet on chlorine CT: students find contact time from clearwell volume and flow, apply a baffling factor, and check CT against a target.
Grade 12 Worksheet
Flood Frequency and Culvert Sizing on Tullimore Creek
A grade 12 science worksheet using 20 years of peak-flow records to rank floods, find return periods and exceedance risk, and size a replacement culvert.
Grade 12 Quiz & test questions
Woldmere Regional: A Wastewater and Receiving Water Test
A grade 12 science unit test worth 50 points on wastewater unit processes, loading and detention calculations, and how a discharge affects oxygen in the receiving stream.