Open-and-go lessons that
inspire kids to love science!
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The most popular K-5 science curriculum
- Hands-on — lead students in the doing of science and engineering.
- NGSS-aligned and Common Core — make the transition to the Next Generation Science Standards and support Common Core.
- Less prep, more learning — prep in minutes not hours. Captivate your students with short videos and discussion questions.
- 1+ million children — STEM education is in crisis. Help us fix it.
Free memberships are available to new teachers at schools that have not tried Mystery Science and new homeschool parents. Those who already received a free membership are not eligible.
Mystery 1: Why do plants grow flowers?
Mystery 2: Why do plants give us fruit?
Mystery 3: Why are some apples red and some green?
Mystery 4: How could you make the biggest fruit in the world?
Mystery 1: Could a statue's shadow move?
Mystery 2: What does your shadow do when you're not looking?
Mystery 3: How can the sun help you if you're lost?
Mystery 4: Why do you have to go to bed early in the summer?
Mystery 5: Why do the stars come out at night?
Mystery 1: What's the biggest excavator?
Mystery 2: Why do builders need so many big machines?
Mystery 3: How can you knock down a wall made of concrete?
Mystery 4: How can you knock down the most bowling pins?
Mystery 5: How can we protect a mountain town from falling rocks?
Mystery 1: How do they make silly sounds in cartoons?
Mystery 2: Where do sounds come from?
Mystery 3: What if there were no windows?
Mystery 4: Can you see in the dark?
Mystery 5: How could you send a secret message to someone far away?
Mystery 1: Have you ever watched a storm?
Mystery 2: How can you get ready for a big storm?
Mystery 3: What will the weather be like on your birthday?
Mystery 4: How do you know what to wear for the weather?
Mystery 5: How could you warm up a frozen playground?
Mystery 1: Why do woodpeckers peck wood?
Mystery 2: Where do animals live?
Mystery 3: How can you find animals in the woods?
Mystery 4: How do animals make their homes in the forest?
Mystery 5: How do plants and trees grow?
Mystery 1: Why do birds have beaks?
Mystery 2: Why do baby ducks follow their mother?
Mystery 3: Why are polar bears white?
Mystery 4: Why do family members look similar to one another?
Mystery 5: Why don't trees blow down in the wind?
Mystery 1: Where can you find whales in a desert?
Mystery 2: How do we know what dinosaurs looked like?
Mystery 3: Can you outrun a dinosaur?
Mystery 4: What kinds of animals might there be in the future?
Mystery 5: Can selection happen without people?
Mystery 1: Could a volcano pop up in your backyard?
Mystery 2: Why do some volcanoes explode?
Mystery 3: Will a mountain last forever?
Mystery 4: How could you survive a landslide?
Mystery 1: How did a tree travel halfway around the world?
Mystery 2: Do plants eat dirt?
Mystery 3: Why do trees grow so tall?
Mystery 4: Should you water a cactus?
Mystery 5: Where do plants grow best?
Mystery 1: How can a car run without gas?
Mystery 2: What makes roller coasters go so fast?
Mystery 3: Why is the first hill of a roller coaster always the highest?
Mystery 4: Could you knock down a building using only dominoes?
Mystery 5: Can you build a chain reaction machine?
Mystery 6: What if there were no electricity?
Mystery 1: Why does the sun rise and set?
Mystery 2: Who set the first clock?
Mystery 3: Why do the stars change with the seasons?
Mystery 4: How can the sun tell you the season?
Mystery 5: Why does the moon change shape?
Mystery 6: What are the wandering stars?
Mystery 1: How could you win a tug-of-war against a bunch of adults?
Mystery 2: What makes bridges so strong?
Mystery 3: How can you go faster down a slide?
Mystery 4: What can magnets do?
Mystery 1: How far can a whisper travel?
Mystery 2: What would happen if you screamed in outer space?
Mystery 3: Why are some sounds high and some sounds low?
Mystery 1: Why would a hawk move to New York City?
Mystery 2: What do plants eat?
Mystery 3: Where do fallen leaves go?
Mystery 1: Could you transform something worthless into gold?
Mystery 2: What would happen if you drank a glass of acid?
Mystery 3: What do fireworks, rubber, and silly putty have in common?
Mystery 1: Why do your biceps bulge?
Mystery 2: What do blind people see?
Mystery 3: How can some animals see in the dark?
Mystery 4: How does your brain control your body?
Mystery 1: How much water is in the world?
Mystery 2: When you turn on the faucet, where does the water come from?
Mystery 3: Can we make it rain?
Mystery 1: Why do we wear clothes?
Mystery 2: Can you really fry an egg on a hot sidewalk?
Mystery 3: Why are so many toys made out of plastic?
Mystery 4: What materials might be invented in the future?
Mystery 1: If you floated down a river, where would you end up?
Mystery 2: Why is there sand at the beach?
Mystery 3: What’s strong enough to make a canyon?
Mystery 1: Where do clouds come from?
Mystery 2: How can we predict when it's going to storm?
Mystery 3: Why are some places always hot?
Made for teachers. By teachers.
Hi! My name is Doug,
I taught elementary science for seven years and made it my students’ favorite subject. I created Mystery Science to share my approach with you.
Every lesson begins with a Mystery that hooks your students. I then narrate an unforgettable story told with stunning images and videos and punctuated with opportunities for discussion. Every lesson concludes with simple hands-on activities designed to use supplies you already have (or are easy to get).
I hope my work saves you time & inspires your students. Read about our mission.
“I love these lessons! Everything is right there. The video clips and questions are great. My students get so involved and everyone participates. As I walk around the classroom, I hear great discussions between the students.”
― Toni (3rd Grade Teacher, Grayling, MI)
Sign up for a free membership for this school year!
Only
10,552
free memberships
remaining.