Grade 8 Science
A complete, classroom-tested year — eight cycles, every week phenomenon-anchored to a Next Generation Science Standard.
8
Cycles
37
Weeks
29
Interactive sims
9
Animations
Cycle 1: Matter, Thermal Energy & Motion
Foundation ConceptsWeek 1 · NGSS MS-PS1-4
Why does ice melt faster in a drink than in a cooler?
Week 2 · NGSS MS-PS3-4
Why do some materials feel cold to touch even at room temperature?
Week 3 · NGSS MS-PS3-3
How can we design materials with specific thermal properties?
Week 4 · NGSS MS-PS1-1
Why does a balloon shrink when you put it in the freezer?
Week 5 · NGSS MS-PS3-2
How do roller coasters work without engines on most of the track?
Week 6 · NGSS MS-PS3-5
Why do billiard balls sometimes stop completely after collision?
Week 7 · NGSS MS-PS1-1
How can we predict what happens in a collision?
Cycle 2: Forces, Motion & Energy
Building SystemsWeek 1 · NGSS MS-PS2-1
Why do you move backward when you jump off a boat?
Week 2 · NGSS MS-PS2-1
Why does a shopping cart get harder to push when it's full?
Week 3 · NGSS MS-PS2-1
If Earth pulls you with gravity, do you pull Earth?
Cycle 3: Natural Selection & Forces
Change Over TimeWeek 1 · NGSS MS-LS4-4
If cheetahs are the fastest land animal, why haven't gazelles gone extinct?
Cycle 4: Ecosystems & Energy Transfer
Cycles & EcosystemsWeek 1 · NGSS MS-LS2-3
Why are there more plants than animals in most ecosystems?
Week 2 · NGSS MS-LS2-3
How do invasive species disrupt energy flow?
Week 3 · NGSS MS-LS2-3
Why don't dead leaves pile up forever in forests?
Week 4 · NGSS MS-LS2-4
Why can some ecosystems survive a drought but others collapse?
Week 5 · NGSS MS-LS2-5
How much would it cost to replace bees with robots?
Cycle 5: Waves & Information Transfer
Systems & SignalsWeek 1 · NGSS MS-PS4-1
How can we see through walls with WiFi but not with flashlights?
Week 2 · NGSS MS-PS4-3
Why do some materials block cell signals while others don't?
Cycle 6: Electricity & Magnetism
Forces & FieldsWeek 1 · NGSS MS-PS2-3
Why do some magnets attract through tables while others don't?
Week 2 · NGSS MS-PS2-4
How can spinning a magnet create electricity?
Week 3 · NGSS MS-PS2-3
Why do the lights dim when you turn on a hairdryer?
Week 4 · NGSS MS-PS2-3
How can a tiny electric motor lift a car?
Cycle 7: Chemical Reactions & Conservation
Earth & ReactionsWeek 1 · NGSS MS-PS1-2
Why do glow sticks eventually stop glowing?
Week 2 · NGSS MS-PS1-3
How can mixing two clear liquids make something solid appear?
Week 3 · NGSS MS-PS1-2
Why does food cook faster on a hot day than a cold day?
Cycle 8: Thermal Energy, Heat Transfer & Year-End Integration
Integration & Year-EndWeek 1 · NGSS MS-PS3-1
Why does a metal spoon get hot in soup but a wooden spoon doesn't?
Week 2 · NGSS MS-PS3-1
How do thermoses keep hot things hot AND cold things cold?
Week 3 · NGSS MS-PS3-1