Grade 3 Lesson plan
Talcott Flats Well Field: A Grade 3 Two-Step and Estimate Lesson
A 50-minute grade 3 lesson where students round to the nearest ten to estimate, then solve two-step problems about water pumped from four wells in a fictional town.
Common Core Math · Grade 3
3.OA.D.8 Solve two-step word problems using the four operations
Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
Why water teaches this standard well
Two-step problems ask how much change is left after buying several bottles of water and a reusable bottle, combining multiplication and subtraction into one equation with a letter for the unknown. Estimating first, then checking the exact answer, mirrors how operators sanity-check a calculated dosage against a rough estimate.
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.
18 materials aligned to 3.OA.D.8
Lesson plans
Grade 3 Lesson plan
Quarry Ridge Model Dam: Building a Reservoir on Slate Creek
A grade 3 engineering lesson: students fair-test dam materials to hold back model Slate Creek, then solve liquid-volume word problems about their fictional reservoir.
Grade 3 Lesson plan
Sharing One Well in Saltgrass Flat: A Grade 3 Civics Lesson
Students help the fictional town of Saltgrass Flat turn a low-well summer into a fair sharing plan, then check the plan with two-step bucket problems.
Worksheets
Grade 3 Worksheet
Water Bottles for the Junco Soccer Team: Equal Groups
A grade 3 worksheet where students use equal-groups multiplication to count the water bottles a fictional soccer team packs, fills, and drinks on game day.
Math problem sets
Grade 3 Math problem set
Lowmeadow Park Pipe Loop: A Grade 3 Design Math Set
A grade 3 problem set measuring two water pipe routes around a fictional park ball field, then choosing the plan that reaches four fountains within a limit.
Grade 3 Math problem set
Pikeview Hydrant Flush Day: A Grade 3 Liters and Two-Step Set
A grade 3 problem set following one spring hydrant flushing day in a fictional town, with equal-groups liter totals, a truck tank, and two-step comparisons.
Grade 3 Math problem set
Ashgrove's Bottled Water Tables: A Grade 3 Two-Step Problem Set
While a fictional town repairs a broken water main, students use two-step multiplication and subtraction to track crates of bottled water handed out at the school gym.
Grade 3 Math problem set
Aspen Ridge Dam Gates: A Grade 3 Two-Step Word Problem Set
A grade 3 problem set of two-step word problems about water released through the gates of a fictional dam, with rounding used to check each answer.
Grade 3 Math problem set
Dunmoor Water Lab Sample Chart: A Grade 3 Bar Graph Set
A grade 3 problem set where students draw and read a scaled bar graph of water samples the fictional Dunmoor lab collects from four spots in the water system.
Grade 3 Math problem set
Skellingate Dam's Wheel Week: A Grade 3 Two-Step Problem Set
Ten grade 3 problems tracking one week at a fictional dam, mixing two-step multiplication and subtraction with clock-time intervals from the crew's log.
Grade 3 Math problem set
Thistle Hollow Rain Barrel: A Grade 3 Water-Saving Math Set
A grade 3 problem set where students add, subtract, and multiply liters to track a fictional family's rain barrel and drippy tap in the town of Thistle Hollow.
Grade 3 Math problem set
South Fork Watershed's Rainfall Totals: A Grade 3 Problem Set
A grade 3 math set where students add, subtract, and halve four months of a fictional watershed's rainfall to track how much water recharges the ground.
Grade 3 Math problem set
Sunrise Elementary's Water Jugs: A Grade 3 Gallons-Quarts Set
A grade 3 math set where students multiply gallons into quarts and track how much water three field day jugs held, used, and had left over.
Grade 3 Math problem set
The Lakeview Splash Pad Pump: A Grade 3 Liters and Multiplication Set
A grade 3 math set where students use multiplication and a rate table to track how many liters a fictional splash pad's pump adds to its tank each minute.
Classroom activities
Grade 3 Classroom activity
Willowbrook's Wetland Filter Relay: A Two-Step Word Problem Activity
A grade 3 relay activity where teams carry pollutant tokens through a model constructed wetland and solve two-step subtraction problems about what remains.
Quizzes & test questions
Grade 3 Quiz & test questions
Coppergate Screen Choice: A Grade 3 Design and Math Quiz
A grade 3 quiz where students work out daily cleaning times for three bar screens at a fictional plant, then choose the screen that meets both goals.
Grade 3 Quiz & test questions
A Day at Clearwater Springs Water Plant: A Grade 3 Math Quiz
A 24-point grade 3 quiz mixing multiple-choice, short-answer, and computation items on liters, a scaled bar graph, and two-step problems at a fictional plant.
Grade 3 Quiz & test questions
Otterbrook School's Water Week: A Grade 3 Math Quiz
An eleven-item, 22-point quiz set at a fictional school's water week, mixing equal groups, liters, two-step problems, and the perimeter of a splash pad.