Open-and-go lessons that
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The most popular K-5 science curriculum

 

Free trials available to teachers who haven't tried Mystery Science, at schools that haven't had full memberships. Homeschool free trials available for the first two Mysteries in each unit.

  • 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.
  • Remote learning — easily share lessons that are perfect for home science learning.

Free trials available to teachers who haven't tried Mystery Science, at schools that haven't had full memberships. Homeschool free trials available for the first two Mysteries in each unit.

Grades K-2
Standards-aligned lessons + activities + extensions
Have you ever watched a storm?
Kindergarten
Weather Conditions
Have you ever watched a storm?
Why are polar bears white?
1st
Camouflage & Animal Survival
Why are polar bears white?
Could you build a house out of paper?
2nd
Materials, Properties, & Engineering
Could you build a house out of paper?
Why do frogs say "ribbit"?
2nd
Biodiversity, Habitats, & Species
Why do frogs say "ribbit"?
Why do woodpeckers peck wood?
Kindergarten
Animal Needs: Food
Why do woodpeckers peck wood?
Could a statue's shadow move?
1st
Sun, Shadows, & Daily Patterns
Could a statue's shadow move?
How do they make silly sounds in cartoons?
1st
Sounds & Vibrations
How do they make silly sounds in cartoons?
How did a tree travel halfway around the world?
2nd
Seed Dispersal
How did a tree travel halfway around the world?
Looking for more? Get all 200+ lessons when you sign up for a free trial!
Grades 3-5
Standards-aligned lessons + activities + extensions
Where can you find whales in a desert?
3rd
Habitats, Fossils, & Environments Over Time
Where can you find whales in a desert?
Why do dogs wag their tails?
3rd
Animal Groups & Survival
Why do dogs wag their tails?
Could a volcano pop up where you live?
4th
Volcanoes & Patterns of Earth's Features
Could a volcano pop up where you live?
Why did the dinosaurs go extinct?
5th
Food Webs & Flow of Energy
Why did the dinosaurs go extinct?
Where do clouds come from?
3rd
Water Cycle & Phases of Matter
Where do clouds come from?
Why do your biceps bulge?
4th
Muscles & Skeleton
Why do your biceps bulge?
Where does energy come from?
4th
Renewable Energy & Natural Resources
Where does energy come from?
Why would a hawk move to New York City?
5th
Food Chains, Predators, Herbivores & Carnivores
Why would a hawk move to New York City?
Looking for more? Get all 200+ lessons when you sign up for a free trial!
5 min. video lessons
How does hand sanitizer kill germs?
K-5
How does hand sanitizer kill germs?
How deep does the ocean go?
K-5
How deep does the ocean go?
Why do baby animals look so cute?
K-5
Why do baby animals look so cute?
Can you make lava?
K-5
Can you make lava?
Can animals get a sunburn?
K-5
Can animals get a sunburn?
How do things glow in the dark?
K-5
How do things glow in the dark?
Why is the sky blue?
K-5
Why is the sky blue?
What is the most dangerous animal in the world?
K-5
What is the most dangerous animal in the world?
How do broken bones heal?
K-5
How do broken bones heal?
What is the Moon made of?
K-5
What is the Moon made of?
Looking for more? Get all 200+ lessons when you sign up for a free trial!
15 min. video lessons
How do earthquakes happen?
K-5
How do earthquakes happen?
How do germs get inside of your body?
K-5
How do germs get inside of your body?
Can animals laugh?
K-5
Can animals laugh?
Were dragons ever real?
K-5
Were dragons ever real?
Why is the ocean salty?
K-5
Why is the ocean salty?
What is a black hole?
K-5
What is a black hole?
Why do cats purr?
K-5
Why do cats purr?
Why do we get hiccups?
K-5
Why do we get hiccups?
How old is the Earth?
K-5
How old is the Earth?
Who invented pizza?
K-5
Who invented pizza?
What's the biggest tree in the world?
K-5
What's the biggest tree in the world?
Are unicorns real?
K-5
Are unicorns real?
Looking for more? Get all 200+ lessons when you sign up for a free trial!
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Loved by students and teachers
The days I have 100% attendance online are the days I tell the kids we are doing Mystery Science. This was my first Mystery Science lesson ever. It is so easy to prep and so fun to do!! LOVED it!!! I am so thankful for Mystery Science during this time of distance learning. I love it when I am in school too, but it is especially helpful now!

New to Mystery Science? Get a free trial until June 30, 2021!
Only 322 free trials remaining.