Open-and-go lessons that inspire kids to love science.

Science curriculum for K—5th grades.

90 sec
  • Hands-on — lead students in the doing of science and engineering.
  • Standards-aligned science lessons — Cover core standards in 1-2 hours of science per week.
  • Less prep, more learning — prep in minutes not hours. Captivate your students with short videos and discussion questions.

Sign up now to try Mystery Science for free.

Sign up

Video Bonus Vote
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Slide Image
Full Screen
Controls Icon Exit Full Screen
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
Check out this tiny egg that's even smaller than a fingernail! What kind of bird do you think laid this egg?
5
Full Screen
Controls Icon Exit Full Screen
It’s a hummingbird nest! Hummingbirds are the smallest birds in the world, so of course their eggs are tiny!
5
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
The whale shark is the largest shark. But have you ever wondered: What’s the smallest shark?
4
Full Screen
Controls Icon Exit Full Screen
Slide Image
Here’s the smallest shark, a dwarf lantern shark. It lives extremely deep in the ocean. This one is full grown!
4
Full Screen
Controls Icon Exit Full Screen
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
This is one of the tiniest trees in the world, but it wasn’t supposed to grow this small! What happened to it?
3
Full Screen
Controls Icon Exit Full Screen
You can make just about any tree stay tiny, if you trim its roots as it grows. Doing this is called “bonsai."
3
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
You know what tornadoes look like and how destructive they can be. But have you ever seen a tiny one?
2
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Tiny tornadoes are called dust devils and they’re usually harmless!
2
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Most dust devils only last a minute or two. People at this game just waited for it to pass then continued to play!
2
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
Here’s the smallest lizard, a pygmy chameleon! This one is an adult. How small do you think a baby one is?
1
Full Screen
Controls Icon Exit Full Screen
The babies are so small, they can stand on the tip of a matchstick!
1
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
Full Screen
Controls Icon Exit Full Screen
Full Screen
Controls Icon Exit Full Screen
Video trouble?

Voting for this episode is now closed. Would you like to vote on the most recent poll?

We pulled three questions from our jar. Which question do you want to explore?

  • Why do pandas only eat bamboo?

    -Korban, 3rd Grade

  • What is a drought?

    -Aaliyah, 2nd Grade

  • How do windmills work?

    -Junichiro, Kindergarten

Why isn’t Pluto a (major) planet anymore?

Watch the video to discover the answer and don't forget to vote for next week's question. There are mysteries all around us. Have fun and stay curious!