Grade 12 Lab / experiment
Quarryhill Soap Titration: Calibrating a Water Hardness Test
A grade 12 chemistry lab where students calibrate a soap titration with Epsom-salt standards, estimate tap-water hardness as CaCO3, and check it against EDTA.
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 Worksheet
Wren Hollow: A Wet-Weather Month Against Secondary Treatment Limits
A grade 12 worksheet in which students audit a fictional plant's wet February against 7-day, 30-day and 85 percent removal limits, then trace storm loads downstream.
Grade 12 Classroom activity
Fellstone Spring: Fracture Widening and Conduit Growth
A grade 12 activity where teams measure how delivery rate controls limestone dissolution, then run three widening rounds until one fracture takes the flow.
Grade 12 Debate kit
Reconnecting the Ardsley Floodplain or Raising the Levee
A grade 12 science debate on whether a fictional levee district should set its levee back to reconnect a floodplain or raise the existing embankment in place.
Grade 12 Lesson plan
Turnover and Intake Depth at Calderhurst Reservoir
A 60-minute grade 12 lesson using a calorimeter mixing investigation and energy balance to explain reservoir stratification and choose an intake blend.
Grade 12 Project
Road Salt and the Chloride Pulse in Havering Creek
A seven-session grade 12 field investigation measuring conductivity above and below salted roads, then evaluating a fictional town's winter salting practice.
Grade 12 Classroom activity
Surface Tension, Foam, and PFAS at Ninebark Lake
A grade 12 four-station rotation comparing bulk properties of water and alcohol, then using surfactant behavior to explain why lake foam concentrates PFAS.
Grade 12 Writing prompt
Rennick Creek: Channel Change and Late-Summer Flow
A grade 12 scientific argument prompt in which students weigh channel incision against irrigation withdrawal as the cause of a fictional creek's summer flow loss.
Grade 12 Lesson plan
The Freshwater Lens Under Selvey Point
A 55-minute grade 12 lesson building a spreadsheet model of a barrier island's freshwater lens and testing which withdrawal rates keep seawater below the well screen.
Grade 12 Reading passage
Sinking Ground in the Sowerby Valley
A grade 12 science passage and data table on how groundwater pumping compacts clay layers, sinks the land surface, and reshapes farming in a fictional valley.
Grade 12 Debate kit
Stannard Weir: Removal or a Fish Passage Retrofit
A grade 12 science debate on whether a fictional river authority should remove an aging weir or retrofit it for fish passage, with two-sided ecological evidence.
Grade 12 Writing prompt
Shifting Snowmelt Timing in the Verdigan Basin
A grade 12 explanatory writing prompt using model output from a fictional mountain basin to explain why earlier snowmelt shrinks summer streamflow.
Grade 12 Lesson plan
Cross-Connection Control and Backflow at Ashbury School
A grade 12 science lesson on how pressure loss lets contaminated water enter a distribution main, with handout problems converting feet of head to psi.
Grade 12 Worksheet
Bexmoor Lead Sampling: The 90th Percentile Rule
A grade 12 statistics worksheet computing the median, mean, range, and the Lead and Copper Rule 90th percentile from a fictional utility's ten tap samples.
Grade 12 Lab / experiment
Jar Test Coagulation on Brindle Creek Water: Finding the Dose
A grade 12 lab where students run a five-jar coagulation test on fictional muddy source water, rate settled clarity, and find the lowest effective alum dose.
Grade 12 Quiz & test questions
Brockhurst Plant: Disinfection and Treatment Unit Test
A grade 12 unit test with multiple-choice, short-answer, and computation items on turbidity, chlorine dosing, removal efficiency, and detention time.
Grade 12 Worksheet
Nitrification Stoichiometry and Alkalinity at Cawdry
A grade 12 science worksheet deriving oxygen demand and alkalinity destruction per gram of nitrogen from a balanced equation, then applying both to a plant's daily load.
Grade 12 Worksheet
Reverse Osmosis Flux and Specific Energy at Corravale
A grade 12 science worksheet on a fictional seawater desalination plant: students compute recovery, membrane flux, and the energy penalty per gallon of desalting.
Grade 12 Math problem set
Dellacre Farm Irrigation Demand: Net, Gross, and Efficiency
A grade 12 problem set on irrigation water math: students convert crop needs to acre-feet, apply system efficiency to find gross demand, and size the delivery flow.
Grade 12 Lesson plan
Green Infrastructure for the Ellersby Creek Watershed
A grade 12 lesson using the rational method to compare pre- and post-development runoff and to size a rain garden for a fictional campus roof's first flush.
Grade 12 Lesson plan
Granular Activated Carbon for PFAS at Fenwick Wells
A grade 12 science lesson where students size granular activated carbon treatment for a fictional PFAS-affected wellfield and evaluate ways to extend the carbon's life.
Grade 12 Worksheet
Ferngate High-Service Pump: Tank Fill, Pressure, and Energy
A grade 12 science worksheet using operator math to find a fictional booster station's tank fill time, discharge pressure, and daily energy cost.
Grade 12 Reading passage
Earth's Water Budget and Residence Time
A grade 12 science reading passage on how Earth's water is distributed and how residence time explains why slow reservoirs like deep groundwater are hard to protect.
Grade 12 Quiz & test questions
Halbrook Water District: A Drinking-Water Standards Unit Test
A grade 12 science unit test on drinking-water standards, mixing multiple choice, short answer, and chlorine-dose computation for a fictional water district.