Mystery Science
Here are a few links to some popular science lessons by grade level from Mystery Science.
Lessons are free and no logins or accounts are required.
If you need more lessons than what is listed below, you can sign up up for a free account:
Teacher Sign-up for Full Lessons | Parent Sign-up for Mini-Lessons
Teacher Sign-up for Full Lessons | Parent Sign-up for Mini-Lessons
Kindergarten Lessons
Mini-Lessons (15-30 minutes, all digital)
What's the biggest tree in the world?
Why do we get hiccups?
How do germs get inside your body?
How does hand sanitizer kill germs?
Why do we get hiccups?
How do germs get inside your body?
How does hand sanitizer kill germs?
Full Lessons (45-90 minutes, digital w/ hands-on activity)
Why do woodpeckers peck wood?
How can you find animals in the woods?
Have you ever watched a storm?
What will the weather be like on your birthday?
What's the biggest excavator?
How can you find animals in the woods?
Have you ever watched a storm?
What will the weather be like on your birthday?
What's the biggest excavator?
1st Grade Lessons
Mini-Lessons (15-30 minutes, all digital)
Why do baby animals look so cute?
Were dragons ever real?
How is syrup made?
How were emojis created?
How do germs get inside your body?
How does hand sanitizer kill germs?
Were dragons ever real?
How is syrup made?
How were emojis created?
How do germs get inside your body?
How does hand sanitizer kill germs?
Full Lessons (45-90 minutes, digital w/ hands-on activity)
Why are polar bears white?
Could a statue's shadow move?
How can the sun help you if you're lost?
How do they make silly sounds in cartoons?
How could you send a secret message to someone far away?
Could a statue's shadow move?
How can the sun help you if you're lost?
How do they make silly sounds in cartoons?
How could you send a secret message to someone far away?
2nd Grade Lessons
Mini-Lessons (15-30 minutes, all digital)
Are unicorns real?
How is glass made?
Why is the ocean salty?
How are toys invented?
How do germs get inside your body?
How does hand sanitizer kill germs?
How is glass made?
Why is the ocean salty?
How are toys invented?
How do germs get inside your body?
How does hand sanitizer kill germs?
Full Lessons (45-90 minutes, digital w/ hands-on activity)
Could you build a house out of paper?
How many different kinds of animals are there?
Why do frogs say "ribbit"?
Why is there sand at the beach?
If you floated down a river, where would you end up?
How many different kinds of animals are there?
Why do frogs say "ribbit"?
Why is there sand at the beach?
If you floated down a river, where would you end up?
3rd Grade Lessons
Mini-Lessons (15-30 minutes, all digital)
What is the most dangerous animal in the world?
Why do cats purr?
Can animals get a sunburn?
Why is the sky blue?
How do germs get inside your body?
How does hand sanitizer kill germs?
Why do cats purr?
Can animals get a sunburn?
Why is the sky blue?
How do germs get inside your body?
How does hand sanitizer kill germs?
Full Lessons (45-90 minutes, digital w/ hands-on activity)
Where can you find whales in a desert?
Why do dogs wag their tails?
What's the best way to get rid of mosquitoes?
How can you keep a house from blowing away in a windstorm?
What makes bridges so strong?
Why do dogs wag their tails?
What's the best way to get rid of mosquitoes?
How can you keep a house from blowing away in a windstorm?
What makes bridges so strong?
4th Grade Lessons
Mini-Lessons (15-30 minutes, all digital)
How do earthquakes happen?
Can you make lava?
Could a mountain turn into a volcano?
How do broken bones heal?
How do germs get inside your body?
How does hand sanitizer kill germs?
Can you make lava?
Could a mountain turn into a volcano?
How do broken bones heal?
How do germs get inside your body?
How does hand sanitizer kill germs?
Full Lessons (45-90 minutes, digital w/ hands-on activity)
Could a volcano pop up where you live?
How could you survive a landslide?
Why do your biceps bulge?
How does your brain control your body?
Where does energy come from?
How could you survive a landslide?
Why do your biceps bulge?
How does your brain control your body?
Where does energy come from?
5th Grade Lessons
Mini-Lessons (15-30 minutes, all digital)
How do things glow in the dark?
How deep does the ocean go?
How old is the Earth?
What is a black hole?
How do germs get inside your body?
How does hand sanitizer kill germs?
How deep does the ocean go?
How old is the Earth?
What is a black hole?
How do germs get inside your body?
How does hand sanitizer kill germs?
Full Lessons (45-90 minutes, digital w/ hands-on activity)
Why would a hawk move to New York City?
Why did the dinosaurs go extinct?
Why do the stars change with the seasons?
How much water is in the world?
When you turn on the faucet, where does the water come from?
Why did the dinosaurs go extinct?
Why do the stars change with the seasons?
How much water is in the world?
When you turn on the faucet, where does the water come from?