Grade 6 Lesson plan
Where to Build Post-and-Brush Dams on Sedge Run
Students weigh three stream reaches against a post supply and a one-day work limit, then choose where a fictional crew should build low post-and-brush dams.
Common Core Math · Grade 6
6.RP.A.3 Solve real-world ratio and percent problems
Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations, including finding a percent of a quantity and converting measurement units.
Why water teaches this standard well
This is the workhorse standard for water math: students compute unit prices on a tiered water bill, find what percent of Earth's water is fresh, and convert gallons to liters using ratio tables and double number lines. Nearly every household water-bill and conservation problem the site offers for grade 6 traces back to this one standard.
Materials tagged with this code are written to the full standard , and each carries a written note explaining the alignment. See how we review materials.
179 materials aligned to 6.RP.A.3
Lesson plans
Grade 6 Lesson plan
Halverton's Purple Pipe: Ratio Language for Recycled Water
A 45-minute grade 6 lesson where students describe a town's recycled-water deliveries with ratio language, a ratio table, and a percent of park water.
Grade 6 Lesson plan
Wickholt Nursery's Pond: Evaporation Rates and Percent Lost
A 45-minute grade 6 lesson in which students turn a holding pond's 1.4-inch weekly drop into gallons and find what percent of the pond evaporated.
Grade 6 Lesson plan
Coldstone Springs Well Hardness: The Limestone Underneath
A grade 6 lesson where students compare hardness data from a fictional district's limestone and granite wells and explain how water dissolving rock creates both.
Grade 6 Lesson plan
Marchfield Bend Septic Drainfield: Soil as a Treatment Step
A grade 6 lesson set at a fictional home with no sewer, where students trace how a septic tank and soil drainfield clean wastewater and find percent removal.
Grade 6 Lesson plan
Road Salt in Merribeck Creek: A Winter Chloride Record
A grade 6 lesson where students summarize a fictional town's winter chloride readings, compare them with a creek guideline, and plan how to monitor and cut salt use.
Grade 6 Lesson plan
Nine Dripping Faucets at Barrowmede Court Apartments
A grade 6 consumer health lesson in which students size household leaks as a percent of normal use and price a fictional apartment building's dripping faucets.
Grade 6 Lesson plan
Ardleigh School's Green Roof: Volume with Fractional Depths
A grade 6 lesson on a school's planted roof: students find the volume of a growing-medium layer with a fractional depth and compare it with a storm's runoff.
Grade 6 Lesson plan
Harnbeck's Lead Service Lines: Which Blocks Go First?
A grade 6 civics lesson where students find the percent of lead service lines in four neighborhoods and rank them for a town's replacement budget.
Grade 6 Lesson plan
A Meter Technician's Route in Bexholme: Finding Hidden Leaks
A grade 6 careers lesson where students work as a water meter technician, turning 30-day meter readings into gallons per day and flagging a household leak.
Grade 6 Lesson plan
Reading a Water Bill Like a Utility Billing Clerk
A 45-minute grade 6 careers lesson where students take the role of a utility billing clerk and compute water bills using a usage rate, a fixed charge, and a percent tax.
Grade 6 Lesson plan
Aridell Fog Catcher Water Harvest Design Lesson
A grade 6 engineering lesson where students size and compare fog-catcher mesh designs for a dry village, using area and unit rates to predict daily water harvest.
Grade 6 Lesson plan
Bramfell School Backflow Preventer Design Lesson
A 50-minute lesson where students pick a backflow assembly for a fictional school greenhouse, then check the device still leaves enough pressure at the sprinklers.
Grade 6 Lesson plan
Wrenfield Lead Service Line Replacement Plan Lesson
A grade 6 engineering lesson where students design a phased plan to replace a town's lead service lines on a deadline and budget, then check it with rate and percent.
Grade 6 Lesson plan
Colton Street Main: A Grade 6 Flow-Splitting Ratio Lesson
A 45-minute grade 6 math lesson where a fictional water main splits flow in a 2-to-1 ratio, so students share gallons per minute and find each pipe's percent.
Grade 6 Lesson plan
Cranleigh Canal Flow Rates: A Grade 6 Hydraulics Lesson
A 45-minute grade 6 lesson where students find canal flow with area times speed, then convert cfs to gpm, using the fictional Cranleigh canal and clean numbers.
Grade 6 Lesson plan
Meadowvale Water Bill Expressions: A Grade 6 Lesson
A 45-minute grade 6 lesson where students write and evaluate an algebraic expression for a fictional town's water bill built from a rate and a fixed fee.
Grade 6 Lesson plan
Northgate Plant Shift Log: A Gallons-Per-Hour Rate Lesson
A 50-minute grade 6 lesson where students read a fictional treatment plant's shift log and use unit rate and percent to describe how much water it treats.
Grade 6 Lesson plan
Ravenswood Booster Pump: A Grade 6 Unit-Rate Lesson
A 50-minute grade 6 math lesson using a fictional booster pump's steady rate to build a rate table and solve fill-time and combined-rate problems.
Grade 6 Lesson plan
Sedgely's PFAS Results: Modeling Parts per Trillion
A 50-minute grade 6 math lesson building a thousand-by-thousand ratio ladder so students can compare four wells' PFAS results to the federal limit.
Grade 6 Lesson plan
Vennock Dam's Two Outlets: Unit Rates and Flow Units
A 45-minute grade 6 math lesson comparing two dam outlets by gallons per minute, then converting between gallons per minute and cubic feet per second.
Grade 6 Lesson plan
Water-Career Pay and Openings: A Grade 6 Percent Lesson
A 45-minute grade 6 math lesson using real operator pay and job-opening data to practice percent and unit rates while presenting every water-career path as valid.
Grade 6 Lesson plan
Ardenmill's Incoming Front: Weather Data and Reservoir Inflow
A 50-minute grade 6 lesson in which students read a day of Ardenmill weather station data, track a passing cold front, and estimate the reservoir inflow it produced.
Grade 6 Lesson plan
The Dunmere Aquifer Model: Porosity and Groundwater Storage
A 50-minute grade 6 science lesson where students model an aquifer with gravel and sand, then calculate porosity to explain why some ground stores groundwater well.
Grade 6 Lesson plan
Havenmoor Sedimentation Basin: Detention Time and Settling
A 40-minute grade 6 science lesson where students compute detention time for a fictional plant's settling basin and connect slower water to cleaner water.
Grade 6 Lesson plan
Redfern Farm's Water Footprint: Comparing Foods and Irrigation
A 50-minute grade 6 science lesson where students use water-footprint figures and a fictional farm's irrigation switch to argue how food choices affect water supply.
Grade 6 Lesson plan
Vellmont's New Well: Measuring Drawdown as You Pump
A 50-minute grade 6 lesson on groundwater where students measure well drawdown from static and pumping water levels and reason about the limits of a shared aquifer.
Grade 6 Lesson plan
Wintershaw's April Snowpack Record: Asking Better Questions
A 55-minute grade 6 lesson where students analyze sixty years of April snowpack depths at Wintershaw and write testable questions about what has changed.
Grade 6 Lesson plan
Where Every Water Dollar Goes in Calverton
A 45-minute grade 6 civics and math lesson where students split a fictional town's monthly water bill into percent shares to see where each utility dollar goes.
Grade 6 Lesson plan
The Okafor Family's Water Meter: A Grade 6 Home-Use Lesson
A grade 6 consumer-science lesson where students read a fictional family's water meter, find gallons used per person each day, and set a percent savings goal.
Grade 6 Lesson plan
Tanglewood PE Hydration Goals: A Grade 6 Unit-Rate Lesson
A 45-minute grade 6 health lesson where students use unit rates to turn a coach's daily water goal into bottle refills, cups, and a percent reached.
Grade 6 Lesson plan
Lead at the Whitfield Tap: A Grade 6 Home Water Safety Lesson
A grade 6 health lesson where students read a fictional home lead-test table, compute each result as a percent of the action level, and learn a safe tap habit.
Grade 6 Lesson plan
Cutter Hollow Erosion Barrier Design and Sediment Test
Teams model a hillside in a tray, measure sediment reaching a downstream cup, then design and test a barrier that reduces erosion for the fictional town of Cutter Hollow.
Grade 6 Lesson plan
Fernbrook's Fountain Filter: Ratios in a Reverse-Osmosis System
A grade 6 lesson using ratio language and percent to describe how a fictional school's reverse-osmosis filter splits feed water into drinking and reject water.
Grade 6 Lesson plan
Ridgemont Plant's Daily Output: Converting Million Gallons a Day
A grade 6 math lesson where students convert a fictional treatment plant's daily output from million gallons per day into gallons per day and gallons per minute.
Grade 6 Lesson plan
Elderwood Dam and the Fish Ladder: An Ecosystem Change Argument
A 50-minute grade 6 lesson where students use a fictional dam's fish-count data to calculate percent change and argue how much a fish ladder restored the population.
Grade 6 Lesson plan
Mapping the Dunbrook River Watershed: Land Use Upstream
A grade 6 geography lesson where students map the fictional Dunbrook River watershed and calculate what percent of the land upstream is farmland, forest, and urban area.
Grade 6 Lesson plan
Wexbridge's Rate Hearing: A Mock Water Board Role-Play
A grade 6 civics lesson in which students role-play residents, a business owner, and a water board at a fictional town's public hearing on a proposed rate increase.
Worksheets
Grade 6 Worksheet
Plover Hill Service Line Cutaway: Drawing a Buried Pipe to Scale
A grade 6 technical illustration worksheet: students scale a fictional buried service line to fit a mailer, then choose line weight, color coding, and label placement.
Grade 6 Worksheet
Choosing a Water Meter Size for the Pinkney Bakery
Students match a fictional bakery's lowest and highest water demands against three meter ranges and charges, then pick a meter and revisit it for a drip line.
Grade 6 Worksheet
Dursley Water District's Apprentice Log: Hours and Percent
A grade 6 worksheet following a water utility apprentice's training log, with percent complete, an hours-per-week unit rate, and a percent increase in pay.
Grade 6 Worksheet
Feltingham's Biosolids Load: Dividing Fractions on the Farm
A grade 6 worksheet where students divide mixed numbers and fractions to find how many acres a biosolids truckload covers and how many loads a farm needs.
Grade 6 Worksheet
Oxholt's Service Line Inventory: Ratios and Percents
A grade 6 worksheet on a town's inventory of 5,000 water service lines, with ratios in simplest form, percents by pipe material, and a replacement schedule.
Grade 6 Worksheet
Which Way Is the Groundwater Moving Under Denholm Yard?
A grade 6 science worksheet using three fictional monitoring wells to find water-table elevations, the flow direction of a diesel spill, and where to drill the next well.
Grade 6 Worksheet
The Alderpine Community Pool Saturday Chemical Log
A grade 6 worksheet on a fictional pool's four daily chlorine and pH readings, covering mean, range, percent change, ratios, and why a chlorine smell misleads.
Grade 6 Worksheet
Barrowmere Ranch's Stock Tank: Decimals for a Herd's Water
A grade 6 worksheet on a ranch's watering tank: students multiply and divide decimals for a herd's daily demand, then find the percent a float-valve leak wastes.
Grade 6 Worksheet
Duncorne Hospital's Cooling Tower: Makeup Water Percents
A grade 6 worksheet on a hospital cooling tower: students use ratios, percents, and unit rates to track where 4,000 gallons of makeup water goes each day.
Grade 6 Worksheet
Kirkbride Plant's Backwash Water: Percent of a Day's Output
A grade 6 worksheet on filter cleaning at a small plant: students find what percent of a day's treated water washes the filters, and what recycling saves.
Grade 6 Worksheet
Acre-Feet on the Cobb Ditch: Sharing a Creek's Water
A grade 6 worksheet on how a ditch company divides a creek by shares, with acre-foot conversions to gallons and cubic feet and a dry-year cut to all shareholders.
Grade 6 Worksheet
Blackhaw Ridge's Pumping Bill: An Energy Cost Worksheet
A grade 6 worksheet where students price a hilltop town's daily pumping energy, find the share of the monthly budget it takes, and test a lower-energy pump.
Grade 6 Worksheet
Watershed Map Colors: Mixing Paint by Ratio for Fern Hollow
A grade 6 art-math worksheet where students mix custom map colors by ratio and scale the recipes to paint a large map of the Fern Hollow watershed.
Grade 6 Worksheet
Grid-Method Scale-Up: A Reverse Osmosis Poster for Marlin Cove
A grade 6 art-math worksheet where students use the grid method and a scale factor of 6 to enlarge a small reverse osmosis diagram into a hallway poster.
Grade 6 Worksheet
Where Pinehaven's Water Goes: An Infographic Bar-Length Worksheet
A grade 6 art-math worksheet where students turn indoor water-use percentages into scaled bar lengths for a home-water infographic poster.
Grade 6 Worksheet
Brindle Creek Sampling Technician: Reading Test Results
A grade 6 careers worksheet where students act as a water sampling technician, comparing turbidity, lead, and PFAS readings to real water limits and finding percents.
Grade 6 Worksheet
Harmon Falls Water Rates: A Rate Analyst Worksheet
A grade 6 careers worksheet where students work as a utility rate analyst, finding percent rate increases and checking a bill against an affordability guideline.
Grade 6 Worksheet
Northsedge Nutrient Recovery Technician: A Shift Log
A grade 6 careers worksheet where students read a nutrient recovery technician's shift log, finding phosphorus removal percents, a production rate, and a permit check.
Grade 6 Worksheet
Sable Flats Irrigation Technician: A Weekly Delivery Schedule
A grade 6 careers worksheet where students work as an irrigation district technician, finding acre-feet per acre unit rates, percent shares, and canal flow rates.
Grade 6 Worksheet
Amboti Village Handpump Well Drawdown Worksheet
A grade 6 engineering worksheet where students design a village handpump well, finding drawdown from water levels and pump output from unit rates and a rate table.
Grade 6 Worksheet
Otterkill Creek Trash Boom Capture Design Worksheet
A grade 6 engineering worksheet where students design a floating trash boom for a creek, using percent capture, a unit rate, and a ratio table to meet a litter goal.
Grade 6 Worksheet
Tarrowgate Vessing Creek Manhole Seal Retrofit Worksheet
Eleven items where students measure storm water leaking into a fictional sewer, size a manhole sealing project, and check whether the plant stays within capacity.
Grade 6 Worksheet
Wembrey Ombry Street Leak Sensor Spacing Worksheet
Eleven items where students space leak sensors along an old water main in a fictional town, price the sensor set, and compare what the leaks cost with finding them.
Grade 6 Worksheet
Aldermont's Treatment Plant: Turbidity Removal in Percents
A grade 6 worksheet where students track cloudiness through the fictional Aldermont plant and find the percent removed, using decimals and the 0.3 NTU limit.
Grade 6 Worksheet
Calderwick Booster Pump Station: Flow, Runtime, and Daily Demand
A grade 6 worksheet where students use a fictional booster pump's flow rate to find gallons pumped, runtime, and percent of a neighborhood's daily demand.
Grade 6 Worksheet
Coldspring Chlorine Residual Log: A Grade 6 Data Worksheet
A grade 6 data worksheet where students summarize a fictional town's chlorine test readings with mean, median, range, and percent within the safe target.
Grade 6 Worksheet
Elmridge's Aging Water Mains: Percent and Cost Worksheet
A grade 6 worksheet on a fictional town replacing old water pipes, using percent, unit rate, and decimals to plan the schedule and cost.
Grade 6 Worksheet
Harmon Bluff Water Bills: Unit Rates and a Rate Increase
A grade 6 math worksheet using a fictional town's two-part water bill to practice unit rates, writing an expression, and finding a percent rate increase.
Grade 6 Worksheet
Kettle Ridge Microbe Basin: BOD Removal Percents and Ratios
A grade 6 math worksheet where students use a fictional plant's microbe basin readings to find BOD removal percents, a feeding ratio, and decimal means.
Grade 6 Worksheet
Ludbury Water District Logbook: Expressions for Hours
A grade 6 worksheet where students write and evaluate expressions such as 8d + 40 to track a trainee operator's hours toward a state license.
Grade 6 Worksheet
Marrowbrook's Wells and the PFOA Limit: A Percent Worksheet
A grade 6 worksheet comparing four fictional Marrowbrook wells' PFOA readings with the 4.0 ppt federal limit using percent, ratio, and decimal reasoning.
Grade 6 Worksheet
Pinnick Orchard's Drip Lines: Ratio Tables and Percent
A grade 6 worksheet where students build ratio tables for an orchard's sprinkler and drip watering, then find the percent of water the drip lines save.
Grade 6 Worksheet
Selby Lake Nitrogen and Phosphorus Ratio Worksheet
A grade 6 worksheet using ratio language, equivalent ratios, and percent to study how nitrogen and phosphorus act as both nutrients and pollution in a lake.
Grade 6 Worksheet
Thornbury's Aging Water Mains: Break Rates and Percent
A grade 6 worksheet where students turn water-main break and pipe-replacement data for the fictional town of Thornbury into unit rates, ratios, and percents.
Grade 6 Worksheet
Westhaven Lead Rule Change: Percents and the New Limit
A grade 6 math worksheet where students use the lead action level dropping from 15 to 10 ppb to practice percent change, percent of a limit, and a replacement rate.
Grade 6 Worksheet
Ashgrove Water Reclamation: Nitrogen In, Nitrogen Out
A grade 6 worksheet on a fictional reclamation plant, where students find nitrogen removal percent and weigh nitrogen as a river pollutant and a farm resource.
Grade 6 Worksheet
The Okafor Home Water Audit: A Denby Cross Conservation Worksheet
A grade 6 science worksheet where students run a fictional family's home water audit, using real per-day and per-use figures to find savings.
Grade 6 Worksheet
Drayton's Aging Water Mains: Choosing What to Replace First
A grade 6 science worksheet where students weigh cost, age, and location to plan a fictional town's limited water-main replacement program.
Grade 6 Worksheet
Hollowmere Middle School Water Audit: Fixtures and Savings
A grade 6 science worksheet where students audit a fictional school's drips and showerheads, then use rates and percent to find the gallons they could save.
Grade 6 Worksheet
Where Earth's Water Is Stored: A Kestrel Bend Water Model
A grade 6 science worksheet where students build a jar model of Earth's water, using percentages and residence times to see how little fresh water people can reach.
Grade 6 Worksheet
The Marlingford Brine Well: Modeling Salt Dissolved in Water
A grade 6 worksheet where students model water and salt particles, then use percent to plan membrane treatment for the salty new well at Marlingford.
Grade 6 Worksheet
Marren Falls Water Works: Tracking Water Lost to Leaks
A grade 6 worksheet on non-revenue water where students find how many gallons a fictional utility loses to leaks and what percent of pumped water is lost.
Grade 6 Worksheet
Quillfield's Treatment Wetland: Cleaning Water with Plants
A grade 6 worksheet where students use inlet and outlet readings to calculate how well a fictional constructed wetland removes waste and nitrogen from water.
Grade 6 Worksheet
Sediment in Cardew Reservoir: Storage Lost Behind Thrushmoor Dam
A grade 6 worksheet on how sediment fills Cardew Reservoir behind Thrushmoor Dam, using percent, ratios, and acre-foot to gallon conversions.
Grade 6 Worksheet
Selby Point's Reverse Osmosis Unit: Recovery and Reject Water
A grade 6 science worksheet on a fictional reverse osmosis unit, where students find recovery percent and how much feed water becomes clean water instead of reject.
Grade 6 Worksheet
Thornbury Orchard Irrigation: Furrow Versus Drip Water Use
A grade 6 science worksheet comparing furrow and drip irrigation at a fictional orchard, using ratios and percents to find how much water each method delivers and saves.
Grade 6 Worksheet
Can Stavely's Water Plant Serve 120 New Homes?
Grade 6 students act as a town water department reviewing a subdivision request, using percent and unit rates to test whether the plant has room for 120 more homes.
Grade 6 Worksheet
Is Lindmoor's Water Bill Affordable? A Percent Worksheet
A grade 6 economics worksheet where students find three fictional families' water bills as a percent of income and test each against a 4.5 percent high-burden guideline.
Grade 6 Worksheet
Maidley Middle School's Lunch Menu and Its Water Footprint
A grade 6 ratio and percent worksheet in which students use published water-footprint figures to compare the water behind two lunch menus at a fictional middle school.
Grade 6 Worksheet
Reading Thornby's Yearly Water Quality Report
A grade 6 civics worksheet where students read a fictional town's annual water quality report, compare test results to legal limits, and find one result as a percent.
Grade 6 Worksheet
Bottled or Tap at Corliss Middle School: A Grade 6 Cost Worksheet
A grade 6 consumer worksheet where students find unit prices for bottled water, compare a year of cost to a reusable bottle, and figure the percent saved.
Grade 6 Worksheet
Emberly's Well Test for PFAS: A Grade 6 Parts-per-Trillion Worksheet
A grade 6 worksheet where students read a fictional well's PFAS test, find each result as a percent of the limit, and decide which chemical is over the limit.
Grade 6 Worksheet
Larchmont's Water Report: A Grade 6 Percent-of-Limit Worksheet
A grade 6 consumer-science worksheet where students read a fictional town water report and find each test result as a percent of its legal limit.
Grade 6 Worksheet
Corrigan Bend Water-Quality Sampling Plan Worksheet
Nine items where students size a river water-quality sampling plan against a coverage rule and a fixed budget, then compare a bulk-price alternative.
Grade 6 Worksheet
Foxglen Road Culvert Capacity and Peak Flow Worksheet
Nine items where students test three fictional replacement culverts against a required peak flow and a project budget, then check a safety margin.
Grade 6 Worksheet
Foxglove Meadows Lab Results: Percent of a Federal Standard
A grade 6 worksheet pairing fictional lead and chlorine lab readings with the real federal action level and disinfectant limit to practice percent-of-a-quantity problems.
Grade 6 Worksheet
Nitrate Levels in Hazel Run: Decimal Operations and Percent Change
A grade 6 worksheet using decimal nitrate readings from a fictional creek to practice decimal operations, percent increase, and percent-of comparisons.
Grade 6 Worksheet
Quarry Ridge's Water Bill: Expressions and a Percent Rate Increase
A grade 6 worksheet where students write and evaluate an expression for a fictional town's two-part water bill, then compare percent increases in a rate change.
Grade 6 Worksheet
Fertilizer Runoff and the Algae Bloom at Dovetail Pond
A grade 6 worksheet where students use percent-of-a-quantity math to trace how fertilizer runoff feeds an algae bloom and drops dissolved oxygen at a fictional pond.
Grade 6 Worksheet
Hazel Run's Aquifer: Withdrawal, Recharge, and Unit Conversion
A grade 6 worksheet where students convert a fictional town's groundwater withdrawal and recharge from acre-feet to gallons and compare the yearly gap.
Grade 6 Worksheet
Bacteria at Work: Removal Efficiency at Sable Creek Reclamation
A grade 6 worksheet where students calculate how efficiently bacteria remove waste at a fictional wastewater plant and compare results to a real federal standard.
Grade 6 Worksheet
Barrow County's Nutrient Trading Plan: Comparing Two Costs
A grade 6 worksheet comparing the cost of paying farmers for buffer strips against upgrading a treatment plant to meet a fictional county's nitrogen target.
Grade 6 Worksheet
Ferndale's Water Bill: Converting CCF and Tiered Rates
A grade 6 worksheet where students convert a water bill's CCF units to gallons and compute tiered water rate charges for the fictional town of Ferndale.
Math problem sets
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.
Grade 6 Math problem set
Calderway's Log Pages: Which Training Hours Count
A grade 6 careers problem set in which students use one month of a water trainee's log pages to decide which supervised hours count toward a Class 2 operator license.
Grade 6 Math problem set
Hartsmoor Valve Crew: A Week of Unit Rates
A grade 6 careers problem set on a valve maintenance crew's week, covering valves-per-hour unit rates, percent of a program finished, and decimal multiplication.
Grade 6 Math problem set
Ketterby Dam's Fish Ladder: Rate and Percent Problems
A grade 6 problem set on a dam's fish ladder, covering the climb height, a fish's rate per pool, the share of river flow the ladder takes, and a counting rate.
Grade 6 Math problem set
Jesmond School's Aquaponics Tank: Ratios and Daily Water Loss
A grade 6 problem set on a classroom aquaponics system: students write tank-to-bed ratios, find pump turnover, and track a two percent daily water loss across a week.
Grade 6 Math problem set
Kilmory Farm's Irrigation Timer: Inches per Hour on Four Zones
A grade 6 problem set on a farm's sprinkler timer: students work with inches per hour, convert depth of water to gallons, and adjust the schedule after a rainy week.
Grade 6 Math problem set
Cottonwood Pump Station Flow Log: Rates and Percents
A grade 6 careers math set where students use a pump operator's flow log to work with gallons-per-minute unit rates, a ratio, a percent full, and one MGD conversion.
Grade 6 Math problem set
Undercliff Well Field Log: A Groundwater Technician's Math
A grade 6 careers problem set on a well field technician's daily log, covering drawdown, specific capacity as a unit rate, percent share, and a flow conversion.
Grade 6 Math problem set
Harrowfield Well 3 Carbon Filter Sizing and Cost Problems
Ten problems in which students size carbon treatment vessels for a fictional town's PFAS-affected well, then work out media cost, yearly cost, and percent of budget.
Grade 6 Math problem set
Kestrel Farm Buffer Strip Nutrient Runoff Problems
A grade 6 engineering set where students design a grass buffer strip that catches nitrogen and phosphorus runoff, using percent removal, unit rates, and a ratio table.
Grade 6 Math problem set
Northgate School Low-Flow Fixture Retrofit Problems
A grade 6 engineering set where students plan a fixture retrofit, comparing shower and faucet flow rates to find water and cost savings with percent and an equation.
Grade 6 Math problem set
Sedgewater Hatchery Aerator Selection Problems
Ten problems where students size an aerator set for a fictional trout hatchery raceway, then compare two models on purchase price, energy use, and years to pay back.
Grade 6 Math problem set
Sunmeadow Greenhouse Reverse Osmosis Recovery Problems
A grade 6 engineering set where students size a greenhouse reverse osmosis unit using percent recovery, unit rates, and a ratio table of feed water to clean permeate.
Grade 6 Math problem set
Cobblemere's Settling Basin: Volume with a Fractional Depth
A grade 6 problem set in which students find the volume of two rectangular settling basins with fractional depths and convert cubic feet to gallons.
Grade 6 Math problem set
Danforth Farm Fertilizer Runoff: Ratios, Percents, and Decimals
A grade 6 math problem set on a fictional farm's fertilizer, where students use ratios, percents, and decimal changes to study nutrient runoff into a creek.
Grade 6 Math problem set
Dunmore Water Blend: Mixing Ratios and Mineral Decimals
A grade 6 problem set on a fictional town blending well and river water, using mixing ratios, percent, and decimals to track dissolved minerals per gallon.
Grade 6 Math problem set
Fenniston Fire Station Roof: Rain into the Cistern
A grade 6 problem set on rainwater harvesting, where students multiply decimals to find roof runoff in gallons and compare it to a cistern's capacity.
Grade 6 Math problem set
Ferncastle Rain Barrels: How Much Roof Runoff to Capture
A grade 6 math set where students use the roof-runoff rule to find how many gallons a fictional roof sheds, and how many rain barrels that runoff would fill.
Grade 6 Math problem set
Foxwell Reservoir: Flow, Ratio, and Percent Problems
A grade 6 problem set on the fictional Foxwell Reservoir, converting acre-feet, cfs, and gpm and finding percent increase and a ratio split of released water.
Grade 6 Math problem set
Grantham Plant Daily Flow: Ratios, Percent, and Tanks
A grade 6 math problem set at a fictional treatment plant, covering percent of a daily limit, a single-step flow conversion, and two-tank ratios.
Grade 6 Math problem set
Harlow Home Reverse-Osmosis Recovery Ratio Problems
A grade 6 problem set on a fictional family's under-sink reverse-osmosis filter, using ratios and percent to compare clean water made with water sent to the drain.
Grade 6 Math problem set
Harlow Reservoir: Storage, Days of Supply, and Conversions
A grade 6 math set where students convert a fictional reservoir's storage between acre-feet, cubic feet, and gallons, then find how many days of water the town has left.
Grade 6 Math problem set
Larkin Creek Watershed: Land-Cover Ratios and Percents
A grade 6 problem set on the fictional Larkin Creek watershed, finding land-cover acres as percents of the total and writing simplified ratios that compare the parts.
Grade 6 Math problem set
Ordley Water Bills: Rates, Totals, and Percent Increase
A grade 6 math set on a fictional utility's water bills, where students find monthly charges, percent increases, and usage from a base plus per-unit rate.
Grade 6 Math problem set
Pikewell Farm's Shallow Well: Dividing Fractions
A grade 6 problem set where students divide fractions and mixed numbers to plan watering from a shallow farm well that refills three quarters of a foot per hour.
Grade 6 Math problem set
Tern Island Desalination Skid: Recovery and Rejection
A grade 6 math problem set on a fictional seawater plant, where students find recovery percent, salt rejection percent, and an energy unit rate.
Grade 6 Math problem set
Wexley's Water Plant: Cleaning Wastewater in Percents
A grade 6 problem set on the fictional Wexley plant, finding what percent of BOD and solids are removed from wastewater and a percent increase in daily flow.
Grade 6 Math problem set
Wrenfield Water Bills: Cost per Gallon and Fixed Charges
A grade 6 problem set on a fictional town's water rates: students find the cost per gallon, compare two bills, and see how a fixed service charge adds up.
Grade 6 Math problem set
Cape Vorne Desalination: Energy and Recovery Problems
A grade 6 math set comparing a fictional desalination plant's energy use with ordinary treatment, and finding the seawater and brine behind each batch of fresh water.
Grade 6 Math problem set
Grindleford Water Main: Pipe Flow and Pressure Problems
A grade 6 science problem set on a fictional town's water main, finding flow from pipe area times water speed and pressure from tower height.
Grade 6 Math problem set
Oakspur Plant Detention Time: How Long Water Settles
A grade 6 science math set where students find a fictional basin's volume, then divide by flow to get detention time and check it against the 2-to-4-hour design range.
Grade 6 Math problem set
Ravensgate's Lead Service Lines: Sampling and Replacement Math
Ten grade 6 problems on lead sampling results, a ten-year replacement schedule, and yearly cost per account for the service lines under the town of Ravensgate.
Grade 6 Math problem set
Evaporation at Tarrant Reservoir: Depth, Volume, and Gallons
Ten grade 6 problems that turn a six-inch summer evaporation loss at Tarrant Reservoir into cubic feet, gallons, and a share of the reservoir's full pool.
Grade 6 Math problem set
Bellcreek Filter Club Budget and Unit-Cost Problems
Eight problems where a fictional engineering club tracks filter-material costs, budget percentages, and bulk pricing using a fixed $6.00 team budget.
Grade 6 Math problem set
Thistle Hollow Rain-Barrel Storage Design Math
Eight problems where students size a rectangular rain-storage tank for a fictional greenhouse roof, using the runoff formula, fractional volume, and percent capture.
Grade 6 Math problem set
Birchgate Elementary's Rain Barrel: Volume with Fractional Dimensions
A grade 6 problem set finding a fictional school's rain-barrel box volume with fractional foot dimensions, converting to gallons, and comparing it to roof runoff.
Grade 6 Math problem set
Bellhaven's Desalination Unit: Reverse Osmosis Recovery Problems
A grade 6 math problem set where students calculate a fictional town's reverse-osmosis recovery rate and test whether it meets a growing population's water demand.
Grade 6 Math problem set
Copper Basin Treatment Plant: Filter Loading Rate Problems
A grade 6 math problem set where students calculate filter loading rates at a fictional treatment plant and compare them to the typical operating range.
Grade 6 Math problem set
Cedar Hollow Farm Stand's Well Pump: Unit Rate and Percent Problems
A grade 6 math set using a fictional farm stand's well pump to practice unit rates, percent of a tank's capacity, and a common unit-rate mistake, all from one scenario.
Labs & experiments
Grade 6 Lab / experiment
Hard Water and Soap: The Nettlecrag Suds Test
A grade 6 consumer health lab comparing how many drops of soap it takes to make lasting suds in plain tap water and in water stirred with Epsom salt.
Grade 6 Lab / experiment
Hartsel Reservoir Evaporation Cover Design Lab
A grade 6 engineering lab where students build and test covers to slow evaporation from model reservoirs, then compare water loss to pick the best design.
Grade 6 Lab / experiment
Amberton's Cloudy Water: Building and Testing a Sand Filter
A grade 6 science lab where students build a layered bottle filter, run muddy water through it, rate cloudiness on a 0-to-10 scale, and calculate the percent removed.
Grade 6 Lab / experiment
Does a Coagulant Help Sediment Settle? A Mabry Plant Test
A grade 6 science lab comparing muddy water with and without a coagulant, rating clarity over time to test a fictional plant's settling step.
Grade 6 Lab / experiment
Ridgeline Water Tower Model: Does Water Height Drive Flow?
A grade 6 lab where students uncover holes at three heights in a bottle, measure how far each stream shoots, and connect water height to pressure and flow.
Grade 6 Lab / experiment
Which Ground Soaks Up Rain? Tamworth Field Infiltration
A grade 6 lab where students time how fast water passes through sand, loam, and clay, then compute infiltration rates and connect the results to runoff and groundwater.
Grade 6 Lab / experiment
Dissolved Oxygen and pH Above and Below a Storm Drain Outfall
A grade 6 lab testing pH and dissolved oxygen at two sites on a fictional creek to see whether a storm drain outfall is lowering water quality downstream.
Classroom activities
Grade 6 Classroom activity
Coldharrow Dam Release Meeting: A Water Careers Role-Play
A grade 6 careers role-play in which five water-sector professionals divide a summer reservoir release, with percent-share math and a keyed decision handout.
Grade 6 Classroom activity
Earth's Water in 100 Counters: A Grade 6 Percent Model
A grade 6 hands-on activity where groups model Earth's water with 100 counters, placing 97 in ocean, 2 in ice, and 1 in fresh water, then compute with percent.
Grade 6 Classroom activity
Junction Creek Sampling Stations: A Percent-in-Range Game
A grade 6 math station-rotation activity where groups read fictional water-test cards and calculate what percent of each station's readings fall in the safe range.
Grade 6 Classroom activity
Prescott Impervious-Surface Percent Grid Game
A grade 6 team game where students cover a 100-square grid to model a fictional block's paved area, reading each square as one percent to compare stormwater runoff.
Grade 6 Classroom activity
Wrenholt Creek Gauge Cards: A Tributary Ratio Rotation
A grade 6 station rotation in which teams act as stream gauges on four brooks and build the ratio and percent each contributes to the main stem.
Grade 6 Classroom activity
The Bucket Brigade Challenge: Calculating a Relay's Pumping Rate
A grade 6 relay activity where teams move cups of water between buckets, then calculate and convert their team's unit rate to gallons per minute.
Grade 6 Classroom activity
Reading a Water Quality Report: The Ridgeline Reservoir Station Relay
A grade 6 station-rotation activity where students compare four water-quality readings to real federal standards and calculate what percent of the readings passed.
Writing prompts
Grade 6 Writing prompt
Why Sculley Creek Closes After a Storm in Larchgrove
A grade 6 informative writing prompt asking students to explain a fictional park's rain closure rule for a creek swim area using runoff data and test results.
Grade 6 Writing prompt
Fountains or a Filling Station at Pemberwick Middle School
A grade 6 argument writing prompt with fictional usage counts, survey results, and costs for replacing a school drinking fountain with a filtered filling station.
Projects
Grade 6 Project
Water-Wise Entrance Garden Design for Caliche Springs Middle School
A grade 6 landscape design project where teams plan a drought-tolerant school entrance garden by texture, form, and color within a fictional weekly water budget.
Grade 6 Project
Vexford Street Rain Garden: A Grade 6 Design Proposal
A four-session grade 6 project where students size a rain garden with fractional depths, keep it inside a budget, and propose it to a public works committee.
Grade 6 Project
The Petrosyan Water Bill: A Halverpine Home Savings Plan
A four-session grade 6 project in which students audit a fictional household water bill, pick three changes, and build a one-page savings plan for the family.
Grade 6 Project
Three Days Without the Tap: A Skelthorne Home Water Plan
A three-session grade 6 project in which students size, price, and lay out a fictional family's stored-water supply for a three-day water main outage.
Grade 6 Project
Clayburn Creek Report Card: A Four-Session Data Team Project
A grade 6 project where student teams turn four monitoring sites' oxygen readings into percents, medians, and a one-page report card for a fictional watershed council.
Grade 6 Project
Emberdale's Capital Plan: Four Projects, One Budget
A four-session grade 6 project where teams fund part of a town's water repair list within a fixed budget and defend the plan to a council panel with evidence.
Grade 6 Project
Nutrient Guardians: Fertilizer-Runoff Yard Signs for Loomis Creek
A grade 6 project where teams design three illustrated yard signs and a proposal urging neighbors to keep fertilizer nutrients out of Loomis Creek, within a fixed budget.
Grade 6 Project
Sunridge Community Garden: An Irrigation Budget Design Project
A grade 6 multi-session project where teams calculate a fictional garden's water demand, then design a watering plan that fits a fixed weekly gallon budget.
Grade 6 Project
Surface Area and Evaporation: A Science Fair Investigation
A five-session, two-week grade 6 science fair project testing whether container opening size changes evaporation rate, with data logging and graphing.
Quizzes & test questions
Grade 6 Quiz & test questions
Dunnholt Backflow Tester: A Water Careers Quiz
A grade 6 careers quiz on the cross-connection control specialist's job, mixing multiple choice, short answer, and percent and unit-rate computation.
Grade 6 Quiz & test questions
Testing Hydrants in Orrinbeck: A Valve Technician Quiz
A grade 6 careers quiz on hydrant flow testing, asking students to find pressure drops, a hydrants-per-hour unit rate, and a percent from a crew's day log.
Grade 6 Quiz & test questions
Ferrow Bend Ice Rink Meltwater Reuse Assessment
A 25-point quiz on a fictional rink's plan to capture and reuse ice-resurfacer meltwater, with multiple-choice and computation items on volume, savings, and fill time.
Grade 6 Quiz & test questions
Marne Water Plant Settling Basin Design Assessment
A grade 6 engineering assessment where students size a rectangular settling basin, find detention time and removal percent, and pick a design change to meet a goal.
Grade 6 Quiz & test questions
Bramblewood Home Water Audit: A Percent and Leak Quiz
A grade 6 quiz mixing multiple-choice, short-answer, and computation items on home water use and leaks, using percent, unit rate, and decimals.
Grade 6 Quiz & test questions
Lowick Water Plant Tour Quiz: Rates and Conversions
A 25-minute grade 6 quiz worth 26 points, mixing multiple choice, short answer, and computation on flow rates and unit conversions at a water plant.
Grade 6 Quiz & test questions
Okafor Household Water Quiz: Percent and Unit Rates
A grade 6 math quiz on a fictional family's water use, mixing multiple-choice, short-answer, and computation items on percent and unit-rate reasoning.
Grade 6 Quiz & test questions
Willow Bend Groundwater Quiz: Drawdown, Output, Percent
A 20-point grade 6 quiz on the fictional Willow Bend aquifer, mixing multiple-choice and computation on drawdown, well output, porosity, and percent of an aquifer used.
Grade 6 Quiz & test questions
Draymoor's Aging Water Pipes: A Grade 6 Unit Quiz
A grade 6 quiz on aging water infrastructure and utility spending, mixing multiple-choice, short-answer, and percent computation items around a fictional town's pipes.
Grade 6 Quiz & test questions
Pallant Springs Water Department: A Grade 6 Civics Quiz
A 21-point grade 6 quiz on who runs and regulates a town water system, mixing multiple choice, short answer, and percent and unit-rate computation.
Career spotlights
Grade 6 Career spotlight
Fenhollow Stormwater Technician: Inspecting Green Infrastructure
A grade 6 career spotlight on a stormwater technician who inspects rain gardens and storm drains, with the training path and cost comparison questions.
Grade 6 Career spotlight
Keeping the Pressure On: A Water Distribution Operator Profile
A grade 6 career profile of a water distribution system operator, following a day on the mains and hydrants and using real operator pay and job-openings data.
Grade 6 Career spotlight
SCADA Technician at Pellham Water Works: A Career Profile
A grade 6 career spotlight on a water plant SCADA technician, following an alarm-heavy shift, the training path into the job, and real operator pay data.
Grade 6 Career spotlight
Mapping Stannington's Lead Service Lines: A GIS Analyst Profile
A grade 6 career spotlight on a utility GIS analyst who builds a lead service line inventory, with the education path and percent-of-inventory questions.