Fourth Grade STEM Activities for Kids (236 results)

STEM Activity

63 reviews

If you have ever watched a rocket launch on TV, you might have noticed that rockets have multiple stages. Some parts of the rocket fall off and burn up in the atmosphere whereas the rest of the rocket keeps going. Why does this happen? Try this activity to find out and build your own two-stage rocket using balloons! Read more

Candy Rainbow

STEM Activity

106 reviews

Here is a fun project you can try with leftover candy you have. You will make some amazing art using nothing but colored candy and hot water—and a little bit of science. Save some of your candy and get started! Read more

Find the Hidden Colors of Leaves

STEM Activity

62 reviews

Have you ever wondered why leaves change from green to an amazing array of yellow, orange, and red during the fall? Leaves get their brilliant colors from pigments made up of various color-creating molecules. During the warm, sunny months, plants use their leaves to turn sunlight into food energy, a process called photosynthesis. This primarily uses a pigment that reflects green light, which gives the leaves their characteristic color. In autumn, when colder, shorter days arrive, many kinds of… Read more

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Make String from Algae

STEM Activity

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

Make a Kazoo

STEM Activity

43 reviews

Do you remember your last parade, party, or fair? You might have been surrounded by sounds of all kinds: fireworks, music, and, maybe even the famous (or infamous) sound of kazoos. A kazoo is a very simple musical instrument, made up of a hollow pipe with a hole in it. They may be simple, but these little noisemakers are a great way to explore sound. In this activity you'll be investigating how kazoos work by building your own! Read more

Make a Rubber Band Guitar

STEM Activity

165 reviews

Did you know that the modern guitar is an instrument that dates back over 4,000 years? The first guitar music was published in 1546, during a time when guitars still had strings made from animal intestines! While guitars have a long history, they are still extremely popular in modern day music. Have you ever wondered how they make the music you listen to everyday? In this activity we're going to make our own guitars, and experiment with the different sounds we can create. Read more

Make Tie-Dye T-shirts with Permanent Markers

STEM Activity

24 reviews

Have you ever made a tie-dyed t-shirt? It can be a lot of fun to dye a shirt in bright colors with spiraling designs (especially when it is done on a warm day outside to prevent indoor messes)! In this science activity, you will get to dye a t-shirt with your own colorful artwork using permanent markers. Along the way, you will find out how solubility helps your drawings leave beautiful designs on the fabric. Read more

Model Your Blood Flow

STEM Activity

63 reviews

Why is it important to eat healthy and exercise? If you don't, you might end up with a cardiovascular disease. These diseases are conditions that affect your heart and blood vessels. The job of your cardiovascular system is to transport blood through your heart, veins, and arteries, to provide oxygen and nutrients to your body. If this blood flow doesn't work properly anymore, it can have serious consequences. In this activity, you will find out what happens to the blood flow of people that… Read more

Rainbow Candy

STEM Activity

11 reviews

Make your own rainbow candy in this fun STEM activity! You will do it without using any food coloring. Instead, you will use a light-bending phenomenon called diffraction. Read more

Build a Marble Roller Coaster

STEM Activity

64 reviews

How much energy does a roller coaster need to go through a loop without getting stuck? Build your own marble roller coaster in this project and find out! Read more

Build a Solar Updraft Tower

STEM Activity

201 reviews

Have you ever had a sunburn? If so, you know how powerful the Sun's heat can be! Did you know that this heat can also be turned into electrical energy? You may have heard about solar cells, but what about a solar updraft tower? This very simple structure uses the sun to heat up air, which then powers a turbine within a large tower. In this activity, you will build one of these towers yourself. Do you think you can make a propeller spin with just hot air? Read more

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