wunder betaThe Human Body Classes for Teens
19 free the human body classes for teens (Ages 13–17) on Wunder — short, fact-checked courses and lessons with narration and a quiz. Filter by age — each link is its own page, not a JavaScript toggle.
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Effects of Drugs and Alcohol
A calm, straight-talking look at how drugs and alcohol change the body and brain, why the teenage years matter, and where to get help.
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The Heart and Double Circulation
Look inside the heart's four chambers and trace blood on its double journey, to the lungs for oxygen and out to the body.
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Single-Celled Organisms
Meet the tiny living things that carry out every part of life inside just one cell.
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Pathogens and the Immune System
Meet the bacteria, viruses, and fungi that cause disease, and discover how your white blood cells fight back.
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Muscle Pairs and Diffusion
See how antagonistic muscle pairs bend and straighten your joints, then discover how diffusion moves substances in and out of your cells.
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Cells, Tissues, and Organ Systems
Zoom from a single tiny cell all the way up to a whole living body, one level at a time.
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Calculating Dietary Energy
Discover how the energy in food is measured and learn to work it out from a nutrition label.
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Aerobic and Anaerobic Respiration
Discover how your cells release energy from glucose, with oxygen and without, and why your muscles ache after a sprint.
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Ohm's Law
Master the equation at the heart of electronics, V = I × R, and learn to rearrange it to find voltage, current, or resistance in any simple circuit.
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Genetic Mutations
A single typo in the DNA code can do nothing, cause harm, or hand an organism a new advantage. Explore what mutations are, where they come from, and why evolution depends on them.
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Chemistry Essentials
The chemistry your class actually covers, made to click: atoms and isotopes, periodic trends, bonding, balancing reactions, the mole, acids and bases, and a first taste of organic chemistry.
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Your Immune System
Meet the layered army inside you — how your body spots invaders, remembers them, and sometimes attacks the wrong target.
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Your Teenage Brain
Why the teenage brain takes risks, feels deeply, and rewires itself.
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Sleep & Your Brain
Why your brain needs 8-10 hours, and what really happens when you sleep.
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Nutrition & Fitness
Food is fuel and building material. Learn what your growing body actually runs on.
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How AI Works
AI isn't magic and it isn't a robot brain. It's pattern-finding math, at massive scale.
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Intro to Psychology
How science studies the mind, brain, and behavior.
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Ecology
Discover how organisms, energy, and environments connect into living systems.
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Human Anatomy
Tour the organ systems that keep the human body running every second.
All The Human Body courses (topic hub)
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