Grade 8 Math problem set
Saltmarsh Cove Water Blending: A System of Equations
Grade 8 students write and solve a system of two equations to blend reverse-osmosis water with brackish well water to a target at a fictional coastal plant.
Water Science · Grade 8
These materials teach earth science, chemistry, biology, and physics through water systems, from the water cycle to treatment chemistry.
68 materials written for this grade · refine by type, topic, or standard in the catalog
Grade 8 Math problem set
Sarsen Basin Snowpack: A Linear Model of Spring Melt
A grade 8 science problem set on a fictional basin's snow course: rate of change in snow water equivalent, melt-out dates, and basin storage in scientific notation.
Grade 8 Reading passage
The Microbes That Clean Our Wastewater at Sedgefield
A grade 8 science reading passage on how bacteria in an activated-sludge plant eat wastewater pollution, with literal and inferential comprehension questions.
Grade 8 Lesson plan
Sunflower Flats Aquifer: A Linear Model of Storage Loss
A 50-minute grade 8 science lesson where students build a linear function for a fictional aquifer's storage as pumping outpaces recharge, then interpret its slope.
Grade 8 Math problem set
Thistlebrook Creek: Water Temperature and Oxygen Scatter Plot
A grade 8 science problem set where students scatter-plot creek temperature and dissolved oxygen, fit a trend line, and predict when oxygen drops below the fish limit.
Grade 8 Lab / experiment
The Three-Bag Transpiration Test: Leaves, Stems, and Air
A two-session grade 8 science lab in which students bag a leafy shoot, a stripped stem, and empty air, then graph class data on leaf count against water collected.
Grade 8 Math problem set
Verdigris Aquifer: Scientific Notation for Groundwater
A grade 8 science problem set where students write huge aquifer and city-use volumes in scientific notation, compare magnitudes, and reason about groundwater depletion.
Grade 8 Classroom activity
Vesper Valley Drought: A Reservoir Allocation Simulation
A grade 8 science simulation where student teams negotiate how to split a shrinking reservoir among a city, farms, and a river across four drought years.
Grade 8 Worksheet
Willowbank Reclamation Plant: Removal Efficiency and Loads
A grade 8 science worksheet where students read a fictional treatment plant's BOD and TSS data, find removal efficiency, and write daily loads in scientific notation.
Grade 8 Lesson plan
Windward Ridge Water Cycle: Tracing Sun and Gravity
A 45-minute grade 8 science lesson where students model a fictional watershed and label each water-cycle step as driven by the sun's energy or by gravity.
Grade 8 Debate kit
Removing Alderfen Dam to Restore Fish Passage: A Grade 8 Debate Kit
A grade 8 debate kit on removing a fictional aging dam to restore fish migration, weighing real dissolved-oxygen science against hydropower and cost.
Grade 8 Lesson plan
Basalt Hollow's Water Budget: Where a Year of Rain Actually Goes
A 50-minute grade 8 lesson where students calculate how a fictional town's yearly precipitation splits among evapotranspiration, runoff, and groundwater infiltration.
Grade 8 Lesson plan
Driftwood Marsh's Wastewater Choice: Treatment Plant or Wetland
A 50-minute grade 8 lesson where students calculate BOD removal efficiency for a treatment plant and a constructed wetland, then compare both to a real standard.
Grade 8 Worksheet
Granite Fork Reservoir Water Quality: Reading a Sample Data Table
A grade 8 worksheet where students read a fictional reservoir's dissolved oxygen, pH, and bacteria data, compare it to real thresholds, and use scientific notation.
Grade 8 Math problem set
Marrow Valley Reservoir: Fitting a Line to Rainfall and Storage Data
A grade 8 math problem set where students scatter-plot a fictional reservoir's rainfall and storage data, use a given fitted line, and evaluate its predictions.
Grade 8 Worksheet
Redmoor Treatment Plant's PFAS Report: Comparing Parts per Trillion
A grade 8 worksheet where students read a fictional plant's PFAS lab report, compare it to the real federal limit, and convert ppm, ppb, and ppt.
Grade 8 Worksheet
Thornhollow Reservoir's Water Budget: Residence Time and Notation
A grade 8 worksheet where students use real residence-time data to compare how long water stays in the atmosphere versus two fictional aquifers.
Grade 8 Reading passage
The Hidden Water in a Hamburger: Comparing Food Water Footprints
A grade 8 informational passage comparing the real water footprints of beef and wheat through a student's research project on food and freshwater use.
Grade 8 Graphic organizer
Nutrient Runoff and a Reservoir Fish Kill: A Cause-Effect Chain
A grade 8 cause-and-effect graphic organizer mapping how fertilizer runoff into a reservoir leads step by step to an algal bloom and a fish kill.
Grades 7–8 Quiz & test questions
Water Cycle Systems Check: Sun, Gravity, and Time
Twelve items testing why water moves through the cycle: sun-driven evaporation, gravity, transpiration, and residence time, with data and a molecule-tracing item.