Grade 8 Lesson plan
Havenscroft Hydrant Flushing: Comparing Rates in Three Forms
A 50-minute grade 8 lesson where students find three fictional flushing crews' gallons-per-minute rates from a table, a graph, and a written rule, then rank them.
Common Core Math · Grade 8
8.EE.B.5 Graph proportional relationships and compare slopes
Graph proportional relationships, interpreting the unit rate as the slope of the graph. Compare two different proportional relationships represented in different ways.
Why water teaches this standard well
Students graph gallons filled per minute for two different garden hoses and compare the slopes of the two lines to see which hose fills a pool faster. Reading unit rate as slope here connects the ratio work of grade 6 directly to the linear-function work later in this grade.
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.
23 materials aligned to 8.EE.B.5
Lesson plans
Grade 8 Lesson plan
Mossbank's Campus Pond: Designing a Floating Treatment Wetland
A grade 8 engineering lesson where students size a floating wetland raft to pull nitrogen from a green campus pond, working within a materials budget.
Grade 8 Lesson plan
Kettle Creek Runners' Hydration: A Grade 8 Linear Function Lesson
A grade 8 health and PE lesson where students model a cross-country runner's fluid loss and water-bottle level as linear functions of practice time.
Grade 8 Lesson plan
Amberfield Farm Irrigation: Comparing Water Use by Method
A 50-minute grade 8 science lesson where students model flood and drip irrigation as linear functions of acreage and compare the water each method uses.
Grade 8 Lesson plan
A Shift at Ironwood Water Plant: Sizing Flow and Pumps
A 50-minute grade 8 science lesson where students run a fictional water plant's numbers: converting MGD to gpm, sizing a pump for peak demand, and setting criteria.
Grade 8 Lesson plan
Marston Bay Water Plant: Chlorine Dose and Filter Loading
A 45-minute grade 8 lesson where students find chlorine demand and filter loading rate at a fictional plant and read loading rate as a proportional relationship.
Grade 8 Lesson plan
Sagebrush Basin Reverse Osmosis: Graphing Proportional Recovery Rates
A 50-minute grade 8 lesson comparing two fictional reverse osmosis membranes by graphing recovery rates as proportional relationships and reading slope as unit rate.
Worksheets
Grade 8 Worksheet
Comparing Pump Rates as Slopes: A Well-Field Line-Graph Worksheet
A grade 8 art-design worksheet where students graph two well pumps' fill rates, compare the slopes as unit rates, and plan a clear two-line comparison chart.
Grade 8 Worksheet
Verity Springs Pressure Zone: Elevation and House Pressure
A grade 8 worksheet where students compute house pressures from elevation differences, read 0.433 as the slope, and pick a fix for the house that falls short.
Grade 8 Worksheet
Windrow Farms Irrigation Rates: Comparing Proportional Slopes
A grade 8 worksheet where students find and compare the slopes of three proportional irrigation systems given as a table, an equation, and a graph.
Grade 8 Worksheet
Birchford Creek Runoff: The Rational Method and Paving
Grade 8 students use the rational method and runoff coefficients to compare peak stormwater runoff before and after paving a fictional meadow site.
Grade 8 Worksheet
The Okafor Household Water Audit: Flow Rates and Per-Person Use
A grade 8 science worksheet where a fictional family audits its water use: per-person demand, two showerhead flow rates as slopes, and toilet and leak losses.
Math problem sets
Grade 8 Math problem set
Umbercote Creek Sediment: Comparing Three Unit Rates
A grade 8 problem set where three fictional tributaries carry sediment at proportional rates given as a table, an equation, and a point on a graph.
Grade 8 Math problem set
Willow Draw's Two Sprinkler Packages: Slope as a Water Rate
A grade 8 problem set where students compare an irrigation technician's two sprinkler packages, one given as a table and one as an equation, using unit rate as slope.
Grade 8 Math problem set
Ambersyke Meadow Pivot Nozzles: Comparing Two Application Rates
A grade 8 set where students read one nozzle package from a table and one from an equation, compare the unit rates as slopes, and pick the package that fits the pump.
Grade 8 Math problem set
Kestrel Ridge Rooftops: Comparing Rain Harvest Slopes
A grade 8 problem set where students model two school rooftops as proportional rain-harvest lines and compare their slopes, using the standard runoff conversion factor.
Grade 8 Math problem set
Meridian Water Bills: Linear Functions for Two Rate Plans
A grade 8 problem set where students write and compare linear functions for two fictional water-bill rate plans, find the break-even usage, and check affordability.
Grade 8 Math problem set
Redwater Pump Test: Comparing Two Pump Rates as Slopes
A grade 8 problem set comparing two fictional pumps, one shown as a table and one as an equation, by reading each flow rate as the slope of its graph.
Grade 8 Math problem set
Dunmore Desalination Energy: Two Linear Functions Compared
A grade 8 science problem set where students model a fictional town's reverse-osmosis and conventional plant energy use as linear functions and compare the two slopes.
Grade 8 Math problem set
Ostrick Gorge Dam: Turning Falling Water Into Electricity
A grade 8 science problem set on a fictional gorge dam: the constant of proportionality between flow and power, two turbines compared, and a Hoover Dam scale check.
Labs & experiments
Grade 8 Lab / experiment
A Tabletop Solar Still for Brinehaven: Measuring Desalination Yield
A grade 8 lab where students build a solar still, measure fresh water collected over time, and compute a collection rate and percent recovery from salt water.
Quizzes & test questions
Grade 8 Quiz & test questions
Ospreyville Phosphorus Cleanup: A Grade 8 Unit Test
A grade 8 unit test on functions, unit rates, linear equations, and volume, set in a fictional town reducing phosphorus in the Sallowbrook River.
Grade 8 Quiz & test questions
Verdant Springs Water Utility: A Grade 8 Functions and Data Test
A grade 8 unit test on a fictional water utility covering linear functions, slope, solving equations, and fitting a line to scatter plot data.