Jump to main content

Fourth Grade STEM Activities for Kids (236 results)

Search
Refine Results
Filter by
Sort by
Make Your Own Harmonica!
STEM Activity
1
2
3
4
5
292 reviews
Can you name the bestselling musical instrument in the world? If you said harmonica, you are right! The harmonica was said to be patented in 1821 by Christian Buschmann, a 16-year-old German boy. Since then, it has become the top-selling instrument in the world and a household item in many places. Luckily, creating beautiful noise is not just an art—it is also a science! In this activity, you will design and explore your own harmonica-like instrument made from household items. Time to… Read more
Walking Water
STEM Activity
1
2
3
4
5
220 reviews
Imagine this challenge: You have two glasses of water—one empty and one full. You want to pour half of the full glass into the empty one. The twist? You aren't allowed to pick up either glass! Can you get the water to "walk" between the glasses using nothing but a paper towel? Try this activity to find out! Read more
DIY Mini Drone
STEM Activity
1
2
3
4
5
290 reviews
Quadcopters, also called drones, are a fun and popular toy. Explore the world of drones as you build your own mini drone using popsicle sticks in this fun activity. See this page for a complete list of our mini drone projects. You may wish to do the projects in order. Read more
Featured
Make String from Algae
STEM Activity
1
2
3
4
5
213 reviews
Did you know that the seaweed you've seen in the ocean or even eaten as a snack is inspiring innovators to imagine new materials? Large brown algae, like kelp, contains polymers—long chains of molecules—that are more environmentally friendly than the ones in most plastics. These natural polymers (alginates) could eventually be used to create sustainable everyday objects. Try your hand at using a bit of chemistry to turn biodegradable polymers from algae into your own custom… Read more
Explore Glow-in-the-Dark Water!
STEM Activity
1
2
3
4
5
205 reviews
Have you ever been fascinated by things that glow in the dark? It can be a lot of fun to play with bracelets, wands, and other toys that are glow-in-the-dark, like some stickers and creepy, crawly, plastic insects! Have you ever wanted to make something at home that glows? It turns out that it is not that hard to do — all you need is tonic water and a black light! Some common household chemicals can also affect this beverage's glow. In this science activity, you will make tonic water glow… Read more
Build a Wind-Powered Car
STEM Activity
1
2
3
4
5
357 reviews
Is that a sailboat or a sail...car? Design and build a toy car powered by the wind in this fun engineering project! Read more
Launching Homemade Baking Soda Rockets
STEM Activity
1
2
3
4
5
124 reviews
Have you ever enjoyed watching something lift off into the air, like fireworks at a show or a spacecraft launching? It can be an amazing experience. It is thrilling to see something lift off against Earth's gravity. To launch a spacecraft, its rockets give it a strong push that is due to a chemical reaction. This means that every time you see a spacecraft launch, you are watching chemistry at work. In this activity you will get to blast an object into the air using two simple… Read more
Build a Mini LED Lightsaber
STEM Activity
1
2
3
4
5
141 reviews
Build your own mini LED lightsaber with a straw in this quick Star Wars-themed STEM activity. May the Force be with you! Read more
Make Magnetic Slime
STEM Activity
1
2
3
4
5
364 reviews
What happens when you add iron filings to regular slime? You get magnetic slime! Make your own magnetic blob that will swallow up a magnet in this fun experiment. Read more
Generate Electricity with a Lemon Battery
STEM Activity
1
2
3
4
5
241 reviews
Can you imagine how your life would change if batteries did not exist? If it were not for this handy storage of electrical energy, the radio in a car would not function, nor would the lights. A pacemaker or hearing device would need to be plugged into a wall outlet in order to function, and do not forget all portable electronic devices like phones, digital music players, or tablets, which are all powered by batteries. With all the frustration you might have endured coping with dead batteries,… Read more
Build a Bristlebot, a Tiny Toothbrush Robot
STEM Activity
1
2
3
4
5
176 reviews
Do you think you could build a robot on the head of a toothbrush? Bristlebots are simple, tiny robots that buzz around like bugs. They are easy to build and fun to play with, and you do not need any previous experience with robotics to make one. You can even build two bristlebots and race them against each other! Move on to the Materials section to see what parts you need to build bristlebots, and the instructions for step-by-step directions on how to build them. Read more
< 1 2 3 4 5 ... 24 >

Explore Our Science Videos

Quick Links X
Top
Free science fair projects.