Grade 7 Science
A complete, classroom-tested year — eight cycles, every week phenomenon-anchored to a Next Generation Science Standard.
8
Cycles
37
Weeks
27
Interactive sims
8
Animations
Cycle 1: From Cells to Organisms & Heredity
Foundation ConceptsWeek 1 · NGSS MS-LS1-1
How can a single cell become a whole human being?
Week 2 · NGSS MS-LS1-2
Why do different body parts look and act so differently if they all came from one cell?
Week 3 · NGSS MS-LS1-4
How do cells know what job to do?
Week 4 · NGSS MS-LS1-3
What happens when cells stop working together properly?
Week 5 · NGSS MS-LS1-5
Why do some siblings look alike while others look completely different?
Week 6 · NGSS MS-LS3-1
How do parents pass traits to their children without touching their DNA?
Week 7 · NGSS MS-LS3-2
Why do some traits skip generations?
Cycle 2: Chemical Reactions & Energy
Building SystemsWeek 2 · NGSS MS-PS1-5
Where does the wax go when a candle burns?
Week 3 · NGSS MS-PS1-5
Why do hot packs get hot but cold packs get cold?
Cycle 3: Climate Change & Energy Flow
Change Over TimeWeek 1 · NGSS MS-ESS3-5
Why does a car get hot inside but not outside?
Cycle 4: Biogeochemical Cycles & Human Impact
Cycles & EcosystemsWeek 1 · NGSS MS-ESS3-3
Why is the ocean becoming more acidic?
Week 2 · NGSS MS-ESS3-3
What happens when nutrients run off into waterways?
Week 3 · NGSS MS-ESS3-4
Where does all the carbon go when forests are cut down?
Week 4 · NGSS MS-ESS3-3
Why does corn need fertilizer but prairie grass doesn't?
Week 5 · NGSS MS-ESS3-1
How can satellites tell us if an ecosystem is healthy?
Cycle 5: Weather & Climate Systems
Systems & SignalsWeek 1 · NGSS MS-ESS2-5
Why do some storms spin while others don't?
Week 2 · NGSS MS-ESS2-5
How do meteorologists use data to predict severe weather?
Cycle 6: Plate Tectonics & Earth's Interior
Forces & FieldsWeek 1 · NGSS MS-ESS2-2
Why do earthquakes happen in the same places over and over?
Week 2 · NGSS MS-ESS2-3
How can mountains exist on the ocean floor?
Week 3 · NGSS MS-ESS3-2
Why do some volcanoes explode violently while others ooze slowly?
Week 4 · NGSS MS-ESS2-2
How do we know what's inside Earth if no one has ever been there?
Cycle 7: Rock Cycle & Earth's History
Earth & ReactionsWeek 1 · NGSS MS-ESS2-1
How can you find seashells on top of a mountain?
Week 2 · NGSS MS-ESS1-4
How do we know what Earth looked like millions of years ago?
Week 3 · NGSS MS-ESS1-4
How can scientists determine the age of a dinosaur bone?
Cycle 8: Ecosystems, Biodiversity & Year-End Integration
Integration & Year-EndWeek 1 · NGSS MS-LS2-4
Why did removing wolves from Yellowstone change the rivers?
Week 2 · NGSS MS-LS2-2
How can one small change collapse an entire ecosystem?
Week 3 · NGSS MS-LS2-5