The body, connected

Trace the connections between a meal, circulation, breathing, movement and hearing.

Interactive exploration

Body & HealthDigestion and food

What happens to food after you swallow it?

Follow a meal through the gut, then zoom into its lining. Choose starch, protein or long-chain fat and discover why their next routes differ.

3D working model & experimentExplore at your own pace

#digestion#food#intestines#nutrients

Interactive exploration

Body & HealthThe heart and blood circulation

Where does your blood go after a heartbeat?

Turn a real anatomical model in your hands. Reveal its chambers, meet the four valves, then follow the blood moving through both sides of the heart.

Interactive model & diagramsExplore at your own pace

#heart#circulation#valves#blood

Interactive exploration

Body & HealthKidneys and urine

How do kidneys keep useful things while making urine?

Inspect real urinary anatomy, follow a glucose marker out of blood and back again, and discover three different crossings with a ledger that never loses a marker.

3D model & experimentsExplore at your own pace

#kidneys#nephron#urine#filtration

Interactive exploration

Body & HealthLungs and breathing

How do your lungs pull in a breath?

Move through a breath, connect space to airflow, then cross the tiny boundary where oxygen enters the blood.

Interactive model & diagramsExplore at your own pace

#lungs#breathing#diaphragm#oxygen

A small distance.
A big internal pull.Explore the elbow’s leverage

Interactive exploration

Body & HealthMuscles, joints and movement

Why can holding a small weight need a big muscle force?

Move a load closer to an elbow on a transparent teaching arm. See the force change, then explore how muscles can work without visible movement.

3D working model & experimentExplore at your own pace

#muscles#joints#biomechanics#tendons

Interactive exploration

Brain & SensesNeurons and nerve signals

How does a nerve cell send a message?

Nudge a membrane, discover when a spike appears, test its recovery, and cross a chemical synapse. Then inspect a real potassium-channel structure.

3D model & experimentsExplore at your own pace

#neurons#nerves#action-potential#synapse

Interactive exploration

Brain & SensesHearing and the ear

How does a sound reach your brain?

Start with a vibration. Follow air, eardrum, tiny bones and hair cells, then see why the message reaching your brain is a different kind of signal.

Interactive model & diagramsExplore at your own pace

#sound#hearing#waves#frequency

Take these steps at your own pace. Your place is not saved as account progress or scored.