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Inventions & Engineering Classes for Kids

56 free inventions & engineering classes for kids (Ages 6–12) 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.

All ages Toddlers (3)Kids (56)Teens (19)Adults (617)

Science (317)Math (215)History (56)Language (16)

Why Polar Seasons Are So Extreme

Discover why the poles have a summer where the Sun never sets and a winter of darkness, all because of the way our planet leans.

Earth's Frozen Water

From glaciers to sea ice to snow, explore the cryosphere, all of Earth's frozen water, and discover why it matters for the whole planet.

Comparing the Arctic and Antarctic

Explore the two frozen ends of our planet and discover why the icy north and the icy south are surprisingly different worlds.

How Plant Parts Work

Explore how a plant's roots, stem, leaves, and flowers each do their own job to keep the whole plant alive.

The Ocean and Climate

Discover how the giant ocean soaks up heat, makes clouds and rain, and helps steer the whole planet's weather.

Ocean Currents and Global Heat

Follow the global conveyor belt, a worldwide loop of currents that moves heat around the entire planet.

How We Explore the Ocean

Climb aboard submersibles, listen with sonar, and pilot robots to explore the deepest, darkest parts of our planet.

Translating and Reflecting on the Coordinate Plane

Plot points with (x, y) pairs, then move whole shapes around the grid — slide them with translations and flip them with reflections.

Evaporation and the Water Cycle

Where does a puddle go when it dries? Follow water as it evaporates, forms clouds, and falls again on its never-ending journey around our planet.

How Coordinate Grids Work

Read the x-axis, y-axis and origin, and use coordinate pairs to find and plot points on a grid.

Bees, Ants, and Their Colonies

Go inside the buzzing hive and the underground ant city to see how social insects work as one team.

Levers, Pulleys, and Gears

How do you lift something too heavy to budge? Simple machines — levers, pulleys, and gears — let a small force do a big job.

How Magnets Work

Explore the invisible power of magnets: their two poles, the rule that opposite poles attract and like poles repel, and why only iron, nickel, cobalt and steel are magnetic.

Why Circuit Parts Behave Differently

Learn why electricity zips through some parts and struggles through others, meet the idea of resistance, and see how it makes bulbs and toasters work.

Parallel and Perpendicular Lines

Parallel lines run side by side and never meet, like train tracks. Perpendicular lines cross at a perfect right angle. Learn to spot both!

More Batteries, Brighter Bulb

Find out how a battery pushes electricity, why adding more batteries makes a bulb glow brighter, and what it takes to build a working circuit.

How Switches Work

Flick a switch and the light comes on — but how? Discover how a switch opens and closes the loop in a circuit to turn things on and off.

Current and Voltage

Meet the two big ideas of electricity: current, the flow of charge, and voltage, the push that drives it, and see how they work together in a circuit.

Building an Energy-Converting Device

A torch, a buzzer, a motor — each takes electrical energy and turns it into something new. Learn how energy-converting devices work and how to build one yourself.

Building a Simple Circuit

A cell, some wires, and a bulb — join them in a complete loop and the bulb lights up. Learn the parts of a circuit and how to build one that works.

Protecting Earth's Resources

Explore the natural resources our planet gives us, how they can be harmed, and the everyday ways we can protect them.

Weathering and Erosion

Weathering breaks rocks into pieces; erosion carries the pieces away. Together they slowly reshape the whole planet.

Simple Food Chains

The Sun feeds the plants, the plants feed the animals, and one animal can feed another. Follow the food and see how a food chain works.

Earth's Connected Systems

Earth is made of four great systems: land, water, air, and life. Discover how the geosphere, hydrosphere, atmosphere, and biosphere work together.

Land and Water on Earth

Earth is a big ball of land and water. Explore the oceans and continents, climb the mountains, and follow the rivers as you discover where all the land and water on our planet can be found.

How Paleontologists Work

Meet the scientists who dig up the past. Follow a fossil from a dusty hillside all the way to a museum lab.

The Black Death

Learn what the plague of 1348 was, how it spread, and how a disaster that killed millions ended up giving surviving workers new power and better pay.

Medieval Crime and Punishment

Trial by ordeal, trial by combat, the stocks, and the dungeon — learn how medieval justice worked and how wildly different it was from a modern courtroom.

Knights and Armor

Suit up! Learn what knights wore and carried, how they trained from boyhood to serve a lord, and the code of chivalry that told them how to behave.

All About Castles

Towers, moats, drawbridges, and thick stone walls — learn the parts of a castle and why it was both a home and a fortress.

How the Pyramids Were Built

Find out how thousands of workers moved massive stones with ramps and sledges — and how tomb design grew from flat mastabas to the Great Pyramid.

Great Inventors!

Meet real inventors, from Edison's lightbulb team to a kid who invented the popsicle, and discover that every invention starts with noticing a problem!

How astronauts get picked, train in a giant pool, ride a rocket, live while they fall around Earth, and come home as a fireball.

Flap into the amazing world of bats, the only mammals that truly fly, and discover how they see with sound and help our planet.

Swoop into the world of owls to learn the secret of their silent flight, spinning heads, super eyes and ears, and the mystery hidden inside an owl pellet.

From Farm to Table!

Follow your food on its amazing journey from farms and fields all the way to your plate, meeting the plants, animals, giant machines, and hardworking farmers along the way.

Discover how bridges stand strong, meet the famous ones, and learn the clever tricks that keep them from falling down!

Meet real wolves: how their families work, how they talk, hunt together, raise pups, connect to your dog, and even change whole rivers.

Discover the real reason giant metal planes can lift into the sky and fly you around the world.

All About Trains

Meet the mighty machines that ride the rails, from puffing steam engines to the fastest trains on Earth.

Recycling & Our Earth

Turn old stuff into new treasures and help our planet stay healthy!

The invisible force that keeps your feet on the ground and planets in orbit.

Feathers, beaks, and flight — discover the amazing world of birds!

The World of Plants

Meet the green living things that feed our whole planet!

Great Inventions

From the wheel to the internet, meet the ideas that changed the world!

How the Internet Works

Every click sends tiny data packets zooming around the world. Here's how!

From a 1920s play to real robot arms, meet the machines that help us!

Knights & Castles

Raise the drawbridge and meet the knights who guarded mighty castles!

Bones, muscles, heart, lungs and brain — how your body works.

Dive into Earth's oceans, the vast blue waters that cover most of our planet.

Rocks & Minerals

Scratch, sparkle, and sort the amazing minerals that build our planet!

Simple Machines

Six clever tools that make hard work easy. Meet the simple machines!

How Weather Works

Discover how the sky makes rain, clouds, wind, and storms!

Discover how living things and their surroundings work together as one team!

How Your Heart Works

Meet the mighty muscle that beats about 100,000 times a day!

Tour the Solar System

Blast off on a tour of the Sun and its eight amazing planets!

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