Pick your adventure
Every challenge is a real little experiment. You choose the tools, guess what happens next, then find out if you were right. Locked ones open up when you sign in.
π§ Body
26 challenges
What the brain does at night
Why do we need sleep?
Body Β· ages 6-10 Β· 10 min
Why does your heart beat faster?
What makes your heart go thump-thump?
Body Β· ages 6-9 Β· 10 min
What happens when you sneeze?
Where does that big 'ACHOO!' come from?
Body Β· ages 5-8 Β· 8 min
Why do we get goosebumps?
What makes your skin bumpy?
Body Β· ages 6-10 Β· 12 min
How do eyes see in the dark?
What helps your eyes when it's dim?
Body Β· ages 7-10 Β· 12 min
Why do ears pop?
What makes your ears go 'pop'?
Body Β· ages 5-8 Β· 10 min
Muscles: Stronger Every Day!
What helps our muscles grow big and strong?
Body Β· ages 6-9 Β· 10 min
A Peek Inside Your Tooth!
What hidden layers make up a tooth?
Body Β· ages 5-8 Β· 8 min
The Mystery of the Yawn!
Why do we open our mouths so wide sometimes?
Body Β· ages 6-10 Β· 10 min
Magic Skin Repair!
How does your skin fix itself after a scratch?
Body Β· ages 7-10 Β· 12 min
Tongue's Taste Adventure!
How does your tongue know what you're eating?
Body Β· ages 5-8 Β· 8 min
Shiver Mystery!
Why do we shiver when it's cold outside?
Body Β· ages 5-8 Β· 10 min
Blood's Oxygen Journey!
How does my blood carry oxygen to my whole body?
Body Β· ages 6-9 Β· 12 min
Brain's Learning Magic!
What does my brain do when I learn something new?
Body Β· ages 7-10 Β· 12 min
Tummy Rumble Riddle!
Why does my tummy make gurgly noises?
Body Β· ages 5-8 Β· 8 min
Balance Beam Basics!
How do I keep from falling over when I stand or walk?
Body Β· ages 6-10 Β· 10 min
Why does my body get drippy?
What happens when your body gets too hot?
Body Β· ages 6-9 Β· 10 min
Why do I have boogers?
What is that gooey stuff in my nose?
Body Β· ages 5-8 Β· 8 min
Why do my fingers look like raisins?
What makes your fingers get wrinkly in the bath?
Body Β· ages 6-10 Β· 12 min
How fast do my nails and hair grow?
How quickly do your hair and nails get longer?
Body Β· ages 7-10 Β· 10 min
Why do tears fall from my eyes?
What makes tears come out of our eyes?
Body Β· ages 5-8 Β· 10 min
π± Plants
23 challenges
Why do leaves change colour?
What makes autumn leaves so colourful?
Plants Β· ages 6-9 Β· 10 min
How do roots drink water?
How do plants slurp up water from the ground?
Plants Β· ages 5-8 Β· 8 min
Why do flowers smell so sweet?
What makes some flowers smell so lovely?
Plants Β· ages 6-10 Β· 12 min
How do seeds go on adventures?
How do seeds get from one place to another?
Plants Β· ages 5-8 Β· 8 min
Why do plants love the light?
Why do plants bend towards the sun?
Plants Β· ages 6-9 Β· 10 min
Do Plants Sleep?
What happens to plants when the sun goes down?
Plants Β· ages 6-9 Β· 10 min
Tree Rings: A Tree's Storybook!
How do trees get those cool rings inside?
Plants Β· ages 7-10 Β· 12 min
Green Grass Power!
What makes grass green, and why is it so important?
Plants Β· ages 5-8 Β· 8 min
Cactus Desert Secrets!
How do cactuses stay happy in hot, dry places?
Plants Β· ages 6-10 Β· 12 min
Stems: Plant Superhighway!
What's the stem's job and why is it so important for a plant?
Plants Β· ages 5-8 Β· 10 min
Fruity Seed Surprise!
What's inside a fruit?
Plants Β· ages 5-8 Β· 8 min
Mushroom Magic Mystery!
Are mushrooms plants?
Plants Β· ages 6-9 Β· 10 min
Soil's Super Power!
What does soil do for plants?
Plants Β· ages 5-8 Β· 8 min
Vine's Amazing Climb!
How do vines reach up high?
Plants Β· ages 6-10 Β· 10 min
Bug-Eating Plant Power!
Do plants really eat bugs?
Plants Β· ages 7-10 Β· 12 min
Plant thirsty? What happens then?
What happens to a plant when it doesn't get enough water?
Plants Β· ages 5-8 Β· 8 min
Winter survival: chilly plant tricks?
How do plants survive when it's super cold and snowy?
Plants Β· ages 6-9 Β· 10 min
Slow water? Why not fast?
Why is it better to water plants slowly instead of all at once?
Plants Β· ages 6-10 Β· 10 min
Moss magic: how does it stick?
How does moss grow on hard, bumpy rocks?
Plants Β· ages 7-10 Β· 12 min
Poison plants: what's their secret?
Why are some plants poisonous, and what makes them that way?
Plants Β· ages 7-10 Β· 12 min
π§ Matter
3 challenges
πͺ Space
2 challenges
π Earth
4 challenges
Where does trash go?
What can be used again?
Earth Β· ages 6-10 Β· 10 min
β‘ Energy
5 challenges
The slippery race
Why do things stop rolling?
Energy Β· ages 6-10 Β· 10 min
Make a rainbow
Is white light really white?
Energy Β· ages 6-10 Β· 8 min
πΎ Animals
23 challenges
How birds stay up
What does a wing actually do?
Animals Β· ages 6-10 Β· 10 min
Hide like an animal
Why can't we see the gecko?
Animals Β· ages 5-8 Β· 8 min
How do fish breathe underwater?
Do fish have lungs like us?
Animals Β· ages 6-9 Β· 10 min
Why do birds build nests?
Are nests like bird houses?
Animals Β· ages 5-8 Β· 8 min
How do bees make honey?
Do bees 'cook' honey?
Animals Β· ages 6-10 Β· 12 min
Why do cats have whiskers?
Are whiskers just for looking cute?
Animals Β· ages 5-8 Β· 8 min
How do snakes move without legs?
Do snakes slide on their tummies?
Animals Β· ages 7-10 Β· 10 min
Why do dogs pant?
How do dogs keep cool?
Animals Β· ages 5-8 Β· 10 min
How do spiders spin webs?
What is spider silk made of?
Animals Β· ages 6-9 Β· 12 min
Why do frogs change shape?
How does a tadpole become a frog?
Animals Β· ages 6-10 Β· 12 min
How do owls hunt at night?
What makes owls such good night hunters?
Animals Β· ages 7-10 Β· 10 min
Why do zebras have stripes?
What's the secret of zebra stripes?
Animals Β· ages 5-8 Β· 8 min
Turtle Shell Secrets
Is a turtle's shell like a backpack or part of its body?
Animals Β· ages 6-9 Β· 10 min
Elephant Ear Explanations
What's the real reason elephants have such huge ears?
Animals Β· ages 5-8 Β· 8 min
Bat's Dark Detectives
How do bats zoom around without bumping into things at night?
Animals Β· ages 6-10 Β· 12 min
Squirrel's Nutty Secrets
Why do squirrels bury their food, and do they remember where it is?
Animals Β· ages 5-8 Β· 10 min
Butterfly's Big Change
How does a tiny caterpillar become a beautiful butterfly?
Animals Β· ages 7-10 Β· 12 min
Why Do Some Animals Take Long Naps?
What makes an animal want to hibernate?
Animals Β· ages 6-9 Β· 10 min
How Do Dolphins Talk to Each Other?
What sounds do dolphins make to communicate?
Animals Β· ages 6-10 Β· 12 min
Why Do Chameleons Change Colour?
Is it always just for hiding from others?
Animals Β· ages 7-10 Β· 12 min
How Do Ants Work as a Team?
Do ants have special jobs in their colony?
Animals Β· ages 5-8 Β· 8 min
Why Do Birds Fly South?
What makes birds decide to fly away?
Animals Β· ages 6-10 Β· 10 min
βοΈ Mechanics
20 challenges
What Makes Things Go?
Can I make this toy car move?
Mechanics Β· ages 5-8 Β· 8 min
Wheels Make Moving Easy!
Why do wheels help move heavy things?
Mechanics Β· ages 6-9 Β· 10 min
Lever Magic: Lift It Up!
How can a small push lift something super heavy?
Mechanics Β· ages 6-10 Β· 12 min
Ramps: The Easy Way Up!
Why is a ramp easier than lifting?
Mechanics Β· ages 5-8 Β· 10 min
Pulleys: Rope Power!
How can a rope and wheel make lifting easier?
Mechanics Β· ages 7-10 Β· 12 min
Spinning Together: Big & Small Gears!
How do big and small gears work together?
Mechanics Β· ages 6-9 Β· 10 min
See-Saw Fun: Find Your Balance!
How do we make a see-saw perfectly balanced?
Mechanics Β· ages 5-8 Β· 8 min
Spinning Top: Upright Magic!
How does a spinning top stay standing up?
Mechanics Β· ages 6-10 Β· 10 min
Bouncy Fun with Springs!
How do springs store and release bouncy energy?
Mechanics Β· ages 5-8 Β· 8 min
Seatbelts & Inertia: Staying Safe!
Why do seatbelts keep us safe when a car stops fast?
Mechanics Β· ages 7-10 Β· 12 min
Which floor is most 'sticky'?
Can we make things slide slower or faster?
Mechanics Β· ages 6-9 Β· 10 min
What makes a parachute slow down?
Can we make a toy fall slowly or quickly?
Mechanics Β· ages 6-10 Β· 12 min
Does heavier mean faster fall?
Will a big rock always fall faster than a small feather?
Mechanics Β· ages 7-10 Β· 10 min
How far can we launch a marshmallow?
What makes a catapult launch things far or close?
Mechanics Β· ages 5-8 Β· 8 min
How can we build a super strong bridge?
What shapes and materials make a bridge super strong?
Mechanics Β· ages 7-10 Β· 12 min
Build a Wobbly Tower!
Why do tall buildings sometimes tumble down?
Mechanics Β· ages 6-9 Β· 10 min
Twist & Lift with Screws!
How can a simple twist make things go up?
Mechanics Β· ages 7-10 Β· 12 min
Wind Up for Fun!
How do wind-up toys zoom without batteries?
Mechanics Β· ages 5-8 Β· 8 min
Roll, Slide, or Glide?
Why do wheels make things move easier?
Mechanics Β· ages 5-8 Β· 8 min
Design a Super Plane!
What makes a paper plane soar far, far away?
Mechanics Β· ages 6-10 Β· 10 min
π¦ Dinosaurs
10 challenges
How do we know dinosaurs were real?
What's the best clue dinosaurs lived long ago?
Dinosaurs Β· ages 6-9 Β· 10 min
How does a fossil get made?
What's the first step for a bone to become a fossil?
Dinosaurs Β· ages 7-10 Β· 12 min
Why were some dinosaurs SO big?
What helped giant plant-eaters grow huge?
Dinosaurs Β· ages 6-10 Β· 10 min
What was T. rex's favorite meal?
What kind of food did T. rex like to hunt?
Dinosaurs Β· ages 5-8 Β· 8 min
How fast could dinosaurs run?
Which clue tells us best how fast dinosaurs moved?
Dinosaurs Β· ages 7-10 Β· 12 min
Where did the Dinos Go?
What made the dinosaurs disappear?
Dinosaurs Β· ages 6-9 Β· 10 min
Birds: Tiny Dinosaurs?
Are birds related to giant dinosaurs?
Dinosaurs Β· ages 7-10 Β· 12 min
Dino Veggie Feast!
What did plant-eating dinosaurs munch on?
Dinosaurs Β· ages 5-8 Β· 8 min
Dino Defenses!
How did dinosaurs stay safe?
Dinosaurs Β· ages 6-10 Β· 10 min
Dino Bone Dig!
How do scientists find and dig up dinosaur bones?
Dinosaurs Β· ages 7-10 Β· 12 min
πͺ Everyday
20 challenges
Ice Cream Mystery
How can we keep our ice cream cold and yummy?
Everyday Β· ages 5-8 Β· 8 min
Toasty Bread Transform!
What magic makes bread go from soft to crunchy?
Everyday Β· ages 6-9 Β· 10 min
Bubble Pop Mystery!
Why do those shimmery bubbles burst so fast?
Everyday Β· ages 5-8 Β· 8 min
Mirror Magic!
How does a mirror show us exactly what we look like?
Everyday Β· ages 6-10 Β· 10 min
Super Soap Power!
How does soap make our hands squeaky clean?
Everyday Β· ages 7-10 Β· 12 min
Pop! Goes the Kernel!
What makes a little hard kernel suddenly POP?
Everyday Β· ages 6-9 Β· 10 min
Rusty Mystery!
What makes shiny metal turn dull and orange?
Everyday Β· ages 7-10 Β· 12 min
Blue Sky Surprise!
Why is the big sky usually blue?
Everyday Β· ages 6-9 Β· 8 min
Steamy Supper!
What is that cloudy stuff coming off hot food?
Everyday Β· ages 5-8 Β· 8 min
Sip! Sip! Hooray!
How does a straw make the drink come up?
Everyday Β· ages 6-10 Β· 10 min
Balloons & Hair Fun!
Why does a balloon stick to your hair after you rub it?
Everyday Β· ages 6-9 Β· 8 min
Fridge Cold Power!
How does a fridge keep your yummy snacks cold and fresh?
Everyday Β· ages 5-8 Β· 10 min
Salty Ice Magic!
Why does putting salt on ice make it melt faster?
Everyday Β· ages 7-10 Β· 12 min
Sun's Drying Power!
Why do clothes dry faster when they're left out in the sun?
Everyday Β· ages 6-10 Β· 10 min
Milk's Mystery!
Why does milk go sour and yucky if you leave it out?
Everyday Β· ages 5-8 Β· 10 min
Lightning vs. Thunder Race!
Why do we see lightning before we hear thunder?
Everyday Β· ages 6-9 Β· 10 min
Bouncy Ball Bonanza!
Why does a ball bounce when you drop it?
Everyday Β· ages 5-8 Β· 8 min
Misty Window Mystery!
Why do windows get all foggy?
Everyday Β· ages 6-10 Β· 10 min
Candle's Air Mystery!
Why does a candle need air to stay lit?
Everyday Β· ages 7-10 Β· 12 min
Honey's Sweet Secret!
Why does honey never spoil?
Everyday Β· ages 7-10 Β· 12 min