Illustrated lessons: Age 12
170 illustrated lessons for Age 12, by subject.
Interactive lessons
Lessons with a machine to operate: turn the gears, run the engine, open the lock. Each one is open during its lesson’s week, then with a subscription.
Biology
-
How nicotine builds dependence -
How digestion works -
Plant cell and animal cell -
Fast and Slow Muscle Fibres -
Air Sacs and Capillaries -
Inside a Basic Cell -
Inner ear spiral chamber -
One Cell and Many Cells -
Sperm Meets Egg -
Fossil Teeth, Bones, and Tracks -
Heart and Two Loops -
Plants Move Onto Land -
Still Frames, Moving Ball -
Rods and Cones in the Eye -
Genes and Traits -
Eyes, Ears, and the Fear Switch -
Cat Purr Vibrations -
Virus Entering a Cell -
Underground Root Threads -
Sunlit Slope and Rising Air -
Warm Sand Nest -
Warm Sand and Sea Turtle Eggs -
Air's Path Through the Body -
Giraffe Bending to Drink -
Warm Sand, Cool Sand -
Muscle pairs at the elbow -
Animals Carry Seeds -
Same Bones, Different Jobs
Geography
-
Where a Valley's Water Comes From and Goes -
Billions of people, unevenly spread -
How Waves Carve a Headland -
A River's Journey from Mountain to Sea -
Ice Splits the Rock -
Earth's Fresh Water -
Sea cave, arch, stack -
Edges of Moving Slabs -
Ocean Plate Meets Continent -
Mangrove Coast on the Move -
Earth's Magnetic Core -
How Colliding Plates Build Mountains
Music
-
The Four Families of the Orchestra -
The Five-Note Scale on the Black Keys -
Five notes on the black keys -
The Piano's Hidden Five-Note Scale -
Five Ways to Make Music -
Three bands, three eras of sound -
The Major Scale -
Orchestra Families and Sound -
Orchestra Sound Makers -
Melodies That Return and Change -
How an Ensemble Sounds
Physics
-
How a suction cup sticks -
How a wing lifts a plane -
Short arm pushes, long arm flings -
Interactive Water levels and rooftop tanks -
Series and parallel circuits -
Interactive Chainring and sprocket sizes -
Interactive Lifting a Boulder With a Plank -
Two motorcycles on a wet road -
Iron filings around a bar magnet -
Rocks That Join in Orbit -
Two Eyes Two Views -
Storm Spiral -
Mass and Atmospheres -
Particles and a Nucleus -
Storm Cloud Collisions -
Blue Sky Light -
Curved Wing in Airflow -
Spider silk and steel cables -
Airbag Above the Snow -
Short Jaws, Stronger Crush -
Compact Shape Holds Heat -
Sailboat Moving Forward -
Timing a Light Beam to a Mirror
Technology
-
Four families of materials -
Why arches are strong -
Interactive How a Pin-Tumbler Lock Opens -
Slate, cloth and heat -
Test Track Check -
Water and Steam Make Electricity -
Hidden Lenses in Everyday Things -
From Muddy Water to Tap -
Inside a wind turbine -
Websites inside a data centre -
Spacewalk Repair -
Airliner Take-Apart Yard -
Bicycle Parts That Turn the Wheel