Leçons — 3ème Année

Ces leçons sont en anglais, racontées par les tuteurs Koydo.

Atlas rolls on a wheel and axle — turn the wheel, the rod turns with it

Engineering Making · avec Kenji · 15 min

A busy street scene with cars, bicycles, and carts, with Atlas showing a close-up of a wheel and axle mechanism.

Atlas gives a machine two example senses — a light sensor notices dark, a sound sensor notices a clap

Engineering Making · avec Kenji · 15 min

A colorful science lab filled with gadgets, light bulbs glowing, and sound waves illustrated around a friendly robot.

Atlas tests a ramp — gentler slope, watch the load, never throw the car at a person

Engineering Making · avec Kenji · 15 min

A construction site showing a ramp (inclined plane) used to load boxes onto a truck, with Atlas demonstrating the concept with a toy car rolling up the ramp.

Atlas works in roles — finder, planner, holder — and listens when ideas clash

Engineering Making · avec Kenji · 30 min

A lively classroom where kids work together around a table building a bridge model with blocks and string. Education/Atlas stands nearby encouraging teamwork with a big thumbs up.

Atlas lets flowing water push paddles — a water wheel turns work, not a swim stunt

Engineering Making · avec Kenji · 25 min

A sunny outdoor scene near a flowing stream with a wooden water wheel turning, children watching, and 'Atlas' pointing at the wheel's parts.

Atlas looks after a crash — name what failed, try one simple fix, then retest

Engineering Making · avec Kenji · 25 min

A kid’s workshop with a robot model that isn’t moving correctly. Education/Atlas kneels next to the robot, holding a checklist and a screwdriver, guiding a young inventor who looks thoughtful.

Atlas chains a notice to a warning — sensor hears a bang, then a buzzer warns, kind volume

Engineering Making · avec Kenji · 20 min

A kid’s bedroom with a simple alarm setup on a desk: a microphone, a buzzer, and wires connected to a small control box, with Atlas explaining nearby.

Atlas tests two paper planes — dart for a fast line, wide wings for a slower glide, never at people

Engineering Making · avec Kenji · 30 min

A bright classroom table with colorful sheets of paper, rulers, and tape. Education/Atlas holds a paper airplane ready to fly, with several folded airplanes on the table and a measuring tape stretched out.

Atlas names six simple machines as helpers — not yet how a fulcrum trades force

Engineering Making · avec Kenji · 15 min

A colorful workshop filled with various simple machines like levers, pulleys, inclined planes, wheels and axles, screws, and wedges, with the character Atlas pointing to each machine.

Atlas designs parts that can be used again — a clean jar becomes a new job, not a one-use throwaway

Engineering Making · avec Kenji · 25 min

A colorful recycling center with bins for paper, plastic, metal, and glass. The guiding character 'education/atlas' shows kids how to sort materials and explains how some products can be reused or recycled into new things.

Atlas sorts a path from a block — metal can carry a classroom flow, rubber can stop it

Engineering Making · avec Kenji · 20 min

A colorful science lab with various objects like metal spoons, rubber gloves, plastic toys, and a glowing circuit board with the guide character holding examples.

Atlas measures from zero — line the end up, read centimeters, then cut only with a grown-up

Engineering Making · avec Kenji · 20 min

A bright workshop with colorful rulers, tape measures, a wooden table scattered with craft materials like paper, scissors, glue, and a partially built birdhouse. The guiding character, Atlas, is holding a ruler and smiling, ready to help.

Atlas pairs two helpers — a lever rotates on a fulcrum, a pulley can redirect a rope

Engineering Making · avec Kenji · 20 min

A colorful workshop with a large seesaw (lever) and a pulley system lifting a bucket, with kids and the guiding character education/atlas explaining.

Atlas stores a pull, then lets go — a catapult turns stored spring into a launch, never at people

Engineering Making · avec Kenji · 30 min

A backyard workshop with a wooden table filled with craft sticks, rubber bands, spoons, and small balls. Education/Atlas stands nearby holding a blueprint and smiling.

Atlas catches moving air on blades — a windmill turns work, never a flying toy at people

Engineering Making · avec Kenji · 25 min

A breezy hilltop with a large classic windmill turning, kids with model windmills, and 'Atlas' showing a diagram of windmill blades.

Atlas moves the fulcrum — closer to the load means less push, more travel

Engineering Making · avec Kenji · 20 min

A bright playground scene showing a seesaw (lever) with Atlas explaining the fulcrum point, along with images of scissors and a crowbar.

Atlas names stored versus moving — a held ball has stored energy, a rolling ball has motion energy

Engineering Making · avec Kenji · 20 min

A colorful park scene with a playground slide, a swinging swing, and a rolling ball on a hill. Bright sun and green grass with children playing.

Atlas gives a robot a motor — a spin turns electrical energy into a wheel or arm move

Engineering Making · avec Kenji · 25 min

A bright maker space with a partially assembled robot showing visible motors attached to wheels, wires connecting parts, and Atlas holding a motor in one hand and a screwdriver in the other.

Atlas matches a bridge type to the job — beam for a short span, arch to spread, cables to hang

Engineering Making · avec Kenji · 30 min

A scenic outdoor setting with a river and several types of bridges crossing it, a blueprint on a table, and Atlas wearing a hard hat pointing at a model bridge made of beams and arches.

Atlas braces with triangles — three sides stop a corner from racking

Engineering Making · avec Kenji · 15 min

A construction site showing bridges and towers with visible triangular supports, workers assembling triangular frames, sunny day with cranes and tools.

Atlas names a push and a pull as forces that start, stop, or turn a move

Engineering Making · avec Kenji · 20 min

A sunny playground scene with kids playing on swings and slides. Atlas is standing near a wagon, demonstrating pushing it gently. Nearby, a dog is pulling a toy on a string. Colorful arrows indicate push and pull forces.

Atlas builds the loop with a grown-up — battery, two paths, bulb, then check the plus and minus

Engineering Making · avec Kenji · 20 min

A bright workshop with colorful wires, a glowing light bulb, a battery, and a friendly robot helping kids build circuits.

Atlas keeps a span up with supports — pillars under a plank, not a floating stick

Engineering Making · avec Kenji · 25 min

A bright outdoor scene showing different bridge types (beam, arch, suspension) over a river, with kids and education/atlas examining bridge parts and testing a small model bridge.

Atlas designs to last and waste less — fewer new parts, longer use, not a dump-and-forget

Engineering Making · avec Kenji · 20 min

A bright workshop filled with recycled materials, plants, solar panels on the roof, and kids building eco-friendly projects with the guiding character 'education/atlas' showing a model of a sustainable house.

Atlas makes a cheap practice model first — cardboard stands in for the fancy version

Engineering Making · avec Kenji · 20 min

A bright workshop filled with colorful craft materials like cardboard, clay, popsicle sticks, and paper. Education/Atlas stands next to a table covered with small models of cars, houses, and robots.

Atlas links sticks with pins — a crank can turn round motion into up-and-down

Engineering Making · avec Kenji · 35 min

A vibrant craft room with wooden sticks, pins, paper, and the guiding character 'education/atlas' showing a model of a simple moving toy with lever and crank linkages.

Atlas gives a tower a wide base so more of the bottom grips the table

Engineering Making · avec Kenji · 20 min

A bright room with a table covered in colorful blocks and paper shapes. Atlas is balancing a block tower with one hand, showing how it stays steady. Nearby, a tipped-over tower shows what happens when balance is lost.

Atlas codes a path — forward, forward, turn, then forward, in that exact order

Engineering Making · avec Kenji · 20 min

A colorful workshop with a small robot on a grid floor, arrows and movement icons floating above it, and the guiding character 'Atlas' holding a tablet showing code blocks.

Atlas watches a long beam sag — a longer gap makes the middle work harder

Engineering Making · avec Kenji

Atlas stands on a wooden bridge over a stream, pressing down on a long plank with one hand and watching it bend in the middle, while shorter planks nearby stay flat and sturdy.

Atlas brainstorms many fixes only after the bother is already named

Engineering Making · avec Kenji

Atlas stands at a large worktable covered with sketches, sticky notes, and colorful drawings of different bridge designs, holding a pencil and grinning as he pins a fifth idea next to four others on the wall.

Atlas fills a page with many different ideas — quantity first, picking later

Engineering Making · avec Kenji

Atlas the friendly inventor stands at a big whiteboard covered in colorful sticky-note sketches of wild gadgets, marker squeaking as he writes a new idea and turns to look at you with an open hand, inviting you to call out the next one

Atlas builds with hands from the plan — one part at a time, not a random pile

Engineering Making · avec Kenji

Atlas the friendly inventor stands at a sunny workbench pressing cardboard, straws, and masking tape into a rough little model, smiling at a paper plan pinned beside the tools.

Atlas names lift — air over a wing can push a plane picture up, never a flying toy at people

Engineering Making · avec Kenji · 25 min

A bright blue sky with fluffy clouds, a small airplane flying, and Education/Atlas pointing to a diagram of an airplane showing wings, tail, and propeller. Birds soar nearby.

Atlas picks the material after the job — rain wants water to roll off, not a sponge coat

Engineering Making · avec Kenji · 15 min

A science lab with samples of wood, metal, plastic, and fabric, kids testing materials by bending and stretching, charts showing material properties.

Atlas presents in three parts — what it is, how it works, what you learned

Engineering Making · avec Kenji · 15 min

A classroom stage with kids presenting projects to an audience, with Atlas guiding and pointing to a colorful poster board.

Atlas picks a 3D shape for the job — cube to stack, cylinder to roll, sphere as a round ball

Engineering Making · avec Kenji · 20 min

A bright design studio filled with colorful 3D shapes like cubes, cones, and spheres floating around, a 3D model on a computer screen, and Atlas pointing at a large transparent cube.

Atlas iterates — test, notice, change, fly again, as a loop not a one-shot

Engineering Making · avec Kenji · 20 min

A workshop table covered with different versions of a paper airplane, with Atlas showing notes and sketches about improvements.

Atlas needs a closed loop — battery, path, and bulb, or the light stays dark

Engineering Making · avec Kenji · 20 min

A colorful science table with batteries, wires, a small light bulb, and a switch. Atlas is holding a battery and pointing to a simple circuit diagram on a board. Bright lines indicate the flow of electricity.

Atlas treats batteries as grown-up energy packs — plus and minus, never lick, never chew, never short

Engineering Making · avec Kenji · 20 min

A bright maker space with different sizes of batteries, a flashlight, a toy car, and the guide character showing how to insert batteries correctly.

Atlas names the fixer as the person who writes must-do jobs and must-not limits

Engineering Making · avec Kenji

Atlas stands at a wooden workbench covered with sketches, rulers, and colored sticky notes, holding up a handwritten list titled 'What My Bridge Must Do' while pointing excitedly at each item.

Atlas uses a pulley to redirect a pull — down on the rope can lift the load

Engineering Making · avec Kenji · 15 min

A colorful playground with a pulley system lifting a large box, children watching and experimenting, bright sunny sky, trees in the background.

Atlas treats sensors as inputs — a notice goes in, then the project can answer

Engineering Making · avec Kenji · 20 min

A futuristic lab with colorful sensors on tables, a robot reacting to light and touch, and the guide character demonstrating sensor functions.

Atlas codes a tiny light — a command can turn an LED on or off, grown-up for the board

Engineering Making · avec Kenji · 30 min

A bright, tech-filled classroom with a computer, a small circuit board with LEDs, wires, and the guiding character 'education/atlas' demonstrating how to connect and code LEDs using block-based programming.

Atlas changes only one thing on the next build — width or fold, not both

Engineering Making · avec Kenji

Atlas stands at a wooden workbench cluttered with paper bridges, small weights, and sticky notes, carefully lowering a penny onto one bridge while the other three identical bridges wait in a row behind him.

Atlas gathers sun-power in a panel picture — light in, electricity out, never stare at the sun

Engineering Making · avec Kenji · 20 min

A bright sunny day with a rooftop covered in shiny solar panels, children looking at them with 'Atlas' holding a solar cell model.

Atlas meshes gear teeth — one turning wheel can turn the next

Engineering Making · avec Kenji · 15 min

A colorful workshop with different sized gears connected on a board, a bicycle with visible gears, and a clock showing gears inside, bright lights highlighting gear teeth.

Atlas sizes gears — a small driver turns a big gear slower, with a stronger twist

Engineering Making · avec Kenji

Atlas crouches beside an open bicycle with the chain and gears exposed, pointing at two different-sized sprockets while a rear wheel spins slowly then quickly as Atlas shifts the gear lever with a grin.

Atlas improves the weak spot, then shares the better version

Engineering Making · avec Kenji

Atlas the friendly fox engineer stands at a workbench holding a wobbly cardboard bridge, pointing at a bent spot with sticky notes and bright markers nearby.

Atlas sends a load through a structure — down-squeezes and along-tugs, not a toy-car push lesson

Engineering Making · avec Kenji

Atlas stands on a construction site beside a wooden footbridge over a small creek, pressing both hands together to demonstrate compression while a hard hat sits on the railing and a load of bricks sits on the bridge deck.

Atlas faces a three-way trade — strong, light, and cheap rarely all win together

Engineering Making · avec Kenji

Atlas stands inside a busy engineering workshop surrounded by three half-built objects on a workbench: a foam model bridge, a metal tool tray, and a cardboard box. Atlas holds a clipboard in one hand and taps a piece of aluminum foil thoughtfully with the other, looking back and forth between the materials with a curious, deciding expression.

Atlas draws the plan before taping — sketch, labels, and a parts list

Engineering Making · avec Kenji

Atlas the friendly explorer stands at a bright workbench, pencil in hand, drawing a labeled diagram of a cardboard bridge while sticky notes list materials beside the open sketchbook.

Atlas trades a longer path for less force — levers and ramps keep the work similar

Engineering Making · avec Kenji

Atlas stands at a construction site, one hand pressing down on a long wooden crowbar wedged under a heavy rock, using it as a lever, while a wooden ramp leans against a nearby loading dock ready to slide crates up.

Atlas runs a fair test — same drop, same clip, same room, only canopy size changes

Engineering Making · avec Kenji

Atlas the friendly explorer stands at a workshop table, holding two paper parachutes — each with a small paper canopy attached to a binder clip — while a stopwatch and an open notebook of recorded results sit in front of him.

Atlas looks first — name the bother in a sentence before anyone builds

Engineering Making · avec Kenji

Atlas the friendly robot guide stands at a bright workshop table, pointing to a sticky-note board full of problems, sketches, and a small cardboard prototype.