Grade 6 Lesson plan
Choosing a Wet Well Size for the Wrayside Lift Station
Students size the working volume a fictional sewage lift station needs, then test three proposed wet wells against a pump-start rule and a width limit.
Common Core Math · Grade 6
6.NS.B.3 Fluently compute with multi-digit decimals
Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.
Why water teaches this standard well
Students add, subtract, multiply, and divide decimal gallon readings across a full billing cycle to reconcile a water meter's start and end values. Fluent decimal computation here supports every dollar-and-cents calculation on a real water bill.
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.
35 materials aligned to 6.NS.B.3
Lesson plans
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
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.
Worksheets
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
Brandymoor Creek's Storm Gauge: Decimals and Rates of Rise
A grade 6 worksheet on a creek gauge read every two hours during a storm, with decimal subtraction, rates of rise and fall, and a flood-stage comparison.
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
Halbury's Water Tower: Feet of Head and Pounds of Pressure
A grade 6 worksheet on one town's water tower: students multiply and divide decimals to turn feet of water into pounds per square inch and back again.
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
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
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
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
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
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
Ottershaw's Hydrant Flushing Log: Decimals and Unit Rates
A grade 6 worksheet on a spring hydrant flushing route, where students divide decimals to find gallons per minute and compare four hydrants' rates.
Grade 6 Worksheet
Reading Alderfen's Water Quality Report: Numbers and Limits
A grade 6 science worksheet where students read a fictional town's yearly water quality table, compare each result to its legal limit, and subtract to find the margin.
Grade 6 Worksheet
Elmridge Water Main Pipe Material Trade-off Worksheet
Ten items comparing three fictional pipe materials by total cost, cost per year of service, and a scored decision matrix for a water main replacement.
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.
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
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
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
Hollisgate Farm Drip Line Emitter Spacing Problems
Ten problems where students divide a row length by two emitter spacings on a fictional pepper farm, then test each drip design against a permit and a crop rule.
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
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
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
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
Larkspur Basin Chlorine Residual: Dose, Demand, and Decay
A grade 6 problem set on a fictional system's chlorine tests, where students find chlorine demand, the mean and range of residuals, and compare them to the safe range.
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
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
Dissolved Oxygen at Silver Pines Pond: Mean, Median, and Range
A grade 6 math problem set where students find the mean, median, and range of fictional dissolved-oxygen readings and compare them to a real fish-safety threshold.
Classroom activities
Grade 6 Classroom activity
Corrantry Hill Pressure Zone Placement Activity
Groups act as a utility design team, finding water pressure at six houses on a fictional hillside and deciding which ones belong in a booster-served upper zone.