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

Learn more

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

Sign up now for tons of free lessons like this one!

Back

Mini-lessons

Video Bonus Vote
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?
Full Screen
Controls Icon Exit Full Screen

Turn on narration for bonus? ÂżActiva la narraciĂłn para el bono?


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?
5
Everyone sneezes—even some animals do! What’s the best way
to cover your sneezes to stop germs from spreading? Any ideas?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
5
If you don’t have a tissue nearby, sneeze into your elbow like this!
Cover up your nose and your mouth. Do this when you cough too!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
5
One way to remember this is to pretend you are a vampire
lifting your cape. Put your arm over your nose and mouth like this!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
5
You could also pretend you are an elephant swinging your trunk.
Swing your arm across your face before sneezing or coughing.
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
4
You should wash your hands for at least 20 seconds. That’s a
long time! What could you do to make those 20 seconds more fun?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
4
One idea is to hum a song for 20 seconds! When you’re done with
the song, you can stop washing! Here are some 20-second songs!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
3
When people wash their hands, they often miss some spots.
What parts of the hands might some people forget to wash?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
3
Let’s find out! The green areas on this man’s hands show where
germs are. He didn’t wash his hands yet, so there are lots of germs!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
3
Now he’s washed his hands, but only for a few seconds (not 20).
Notice what parts of his hands still have "green germs” on them!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
3
Now he’s washed his hands for a full 20 seconds. All the green
is gone! His hands are germ-free.
Full Screen
Controls Icon Exit Full Screen
Video trouble?
3
So remember to wash the areas by your fingertips and thumbs!
Those are the places where most people forget to wash!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
2
Biting your nails can bring germs from your hands into your body.
How could someone remind themselves to not bite their nails?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
2
They could try putting one or two stickers on their nails, or dipping
their fingers in something that tastes gross like sour lemon juice!
Full Screen
Controls Icon Exit Full Screen
Video trouble?
2
There are other ways germs can get in too. Try not to touch your
eyes, nose, or mouth at all (or chew on pencils or other things).
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Full Screen
Controls Icon Exit Full Screen
Video trouble?
1
Here’s an experiment: someone touched a piece of bread before
washing their hands, and a different piece after washing them...
Full Screen
Controls Icon Exit Full Screen
Video trouble?
Slide Image
1
Here’s what happened after a few weeks—there are two pieces he
touched and one he didn’t touch. Notice which one grew mold!
Full Screen
Controls Icon Exit Full Screen
Slide Image
1
Someone took another piece of bread too and wiped it on a
computer! Here’s how much mold it grew after a few weeks!
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?

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?

  • How is cheese made?

    -Glenn, 2nd Grade

  • Why do animals have tails?

    -Eowyn, 4th Grade

  • How many stars are in the sky?

    -Danna, 3rd Grade

How do germs get inside of your body?

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!