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.
Common Core Math · Grade 6
6.RP.A.1 Understand the concept of a ratio
Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities. For example, 'The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak.'
Why water teaches this standard well
Students describe a treatment plant blending two parts raw river water to one part recycled water using ratio language, practicing the same 'for every...there is' phrasing the standard models. Ratio language here is the vocabulary every later water-rate and blending problem depends on.
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.
17 materials aligned to 6.RP.A.1
Lesson plans
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
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
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.
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
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
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
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
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
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
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.
Math problem sets
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
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
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.
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.
Classroom activities
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.