Fourth Grade Science Experiments (Page 14)

Removing Microplastics from Water with Ferrofluids

Science Fair Project Idea

Scientific Method

Have you ever walked next to your favorite ocean, lake, or creek and seen plastic waste everywhere? Have you ever thought about how much plastic breaks down into microplastics and pollutes waterways? Scientists are coming up with new ways to remove these microplastics from our waterways, and now you can test them out for yourself at home. Read more

Build a River Model!

STEM Activity

1

2

3

4

5

106 reviews

Earth is a very watery place! More than 70% of the Earth's surface is covered by water. This is due to the many water bodies that can be found everywhere on our planet. What types of water bodies do you know? They are all very distinct from one another in their appearance, size, shape, and movement. In this activity, you will explore the distinct characteristics of a river by creating a river model inside a pan with sand, pebbles, and real water! After that, you can continue to model other… Read more

Build a Robotic Arm

Science Fair Project Idea

Engineering Design Process

Robotic arms have many uses, ranging from assembling things in factories to collecting soil samples on Mars to acting as prosthetics (artificial limbs) for humans. If you have ever wanted to build your own robotic arm, this project will guide you through the basics of designing and building a simple one. You can use this design as a starting point to design your own robotic arm and add your own features. Read more

Cabbage Chemistry

Science Fair Project Idea

Scientific Method

This experiment is for all the kids out there who love boiled cabbage! You say you do not like cabbage? Well maybe you will like this amazing color-changing liquid you can make with cabbage. Which solutions around your house can make the cabbage juice change color? Find out while you learn about acids and bases and how to test for them. Read more

Design Your Own Slime

Science Fair Project Idea

Engineering Design Process

There are many different kinds of slime out there. Some slime is runny and liquid-like; other slime is thick and rubbery. Some slime glows in the dark, some is fluffy, and some is even magnetic! What set of properties makes the best slime? What kind of slime would you choose to make if you were selling slime as a toy in your own "slime shop"? In this project, you will experiment with different slime recipes and try to perfect one to make the best slime. Read more

Make Cardboard Automata

STEM Activity

1

2

3

4

5

102 reviews

Have you ever wondered how to create art with moving parts using nothing but cardboard, a few skewers, and some craft supplies? In this fun STEM activity, you will build an automaton, a machine that makes parts appear and disappear, move up and down, spin in circles, or all of these together. The instructions will show you how to build a moving caterpillar, but you can use your imagination to build any other animal or object you want! Read more

Make Marbled Cards Using Science!

STEM Activity

1

2

3

4

5

82 reviews

Do you like both, arts and science? Then this is the perfect activity for you! You will create beautiful marbled paper cards and practice science at the same time! The only materials you need are shaving cream, food coloring, and sheets of paper. It might get a bit messy, but that is part of the fun! Read more

Parachutes: Does Size Matter?

Science Fair Project Idea

Scientific Method

How does a parachute work? Do bigger parachutes work better than smaller parachutes? Find out in this science project if the size of the parachute matters. Read more

Ping Pong Pickup Challenge

Science Fair Project Idea

Engineering Design Process

In this engineering challenge, you will build a device that can pick up a ping pong ball from a distance and return it to a start line. The farther away the ball is, and the fewer materials you use to build your device, the higher your score. You can see how other students have tackled this and other annual Science Buddies Engineering Challenges. Read more

Popsicle Stick STEM Projects

Blog Post

Use wooden craft sticks or popsicle sticks for hands-on STEM activities! STEM Projects with Simple Materials Doing hands-on science doesn't have to involve expensive or specialty materials. The projects highlighted below all feature wooden craft or popsicle sticks! Hands-on STEM Activities Using Popsicle Sticks Popsicle Stick Chain Reaction: Interweave wooden craft sticks in an exploration of potential and kinetic… Read more

Fourth Grade Science Experiments (top 2,000 results)

Explore Our Science Videos