10 Ideas for Fun STEM Activities for Kids

Happy kids programming electric toys and robots at robotics classroom

Engaging children in STEM (Science, Technology, Engineering, and Mathematics) activities from an early age is crucial for fostering an interest in these subjects. By making STEM fun and interactive, we can inspire the next generation of innovators and problem-solvers. Here are some creative and enjoyable STEM activities for kids that will not only entertain them but also educate them.

1. Creating a Volcano

One classic STEM activity is building a homemade volcano. This project teaches children about chemical reactions in a visually engaging way. To create a volcano, all you need is some baking soda, vinegar, food coloring, and a clay model of a volcano. Once everything is set up, kids can mix the baking soda and vinegar inside the volcano, causing a fizzy eruption that simulates real volcanic activity. This activity helps kids understand the basics of chemical reactions and geological processes.

2. Building a Balloon-Powered Car

This activity combines principles of physics and engineering. Kids can create simple balloon-powered cars using everyday materials like straws, bottle caps, and balloons. By blowing up the balloon and releasing it, kids can see how the air escaping from the balloon propels the car forward. This activity introduces children to basic concepts such as propulsion, aerodynamics, and engineering design.

3. Exploring the Stars with a DIY Constellation Viewer

Astronomy can be a fascinating subject for kids, and creating a DIY constellation viewer is a fun way to get them excited about the stars. Using a cardboard tube, some dark paper, and a pin, kids can create their own constellation viewers to project star patterns onto a wall in a dark room. This activity helps children learn about different constellations and the night sky.

4. Experimenting with Gravity and Motion

Children can learn about gravity and motion by creating their own mini roller coasters with marbles and pool noodles or cardboard tubes. By designing tracks and testing them out, kids can see how gravity affects the speed and direction of the marble. This activity encourages critical thinking and problem-solving as they adjust their designs to improve the roller coaster’s performance.

5. Conducting Egg Drop Challenges

Egg drop challenges are a fantastic way to teach kids the basics of physics and engineering. The goal is to create a contraption that will protect a raw egg from breaking when dropped from a certain height. Using materials such as straws, tape, and cardboard, kids can experiment with different designs to find the most effective solution. This activity promotes creativity, engineering skills, and an understanding of forces and impact.

6. Growing Crystals

Science can be magical when kids learn how to grow their own crystals. By dissolving substances like sugar, salt, or borax in hot water and allowing the solution to cool, kids can observe the formation of crystals over several days. This experiment teaches children about the concepts of solubility, saturation, and the crystal growth process.

7. Building a Simple Circuit

Simple circuit-building activities are an excellent way to introduce kids to basic electrical engineering concepts. Using items such as batteries, wires, and small light bulbs or motors, kids can create their own circuits to power lights or make things move. This hands-on activity helps kids understand the flow of electricity and the components of an electrical circuit.

8. Exploring the Density of Liquids

Kids can explore the concept of density by creating their own density towers. Using a variety of household liquids like honey, dish soap, water, and oil, children can create layers of liquids in a clear container and observe how they stack according to their density. This activity is a captivating way for kids to learn about buoyancy and the properties of different substances.

9. Designing and Testing Paper Airplanes

Paper airplanes are a simple yet effective way to teach kids about aerodynamics and engineering. By designing different shapes and sizes of paper airplanes, children can test how design changes affect flight distance and stability. This activity encourages experimentation and learning through trial and error.

10. Creating a Rainbow in a Jar

A rainbow in a jar is a visually stunning experiment that teaches kids about liquid densities and the spectrum of light. By layering different colored liquids with varying densities in a jar, children can create a rainbow effect. This activity not only explains density but also introduces kids to the concept of light refraction.


Incorporating these fun and educational STEM activities into a child’s routine can make learning an enjoyable experience. Many of the materials needed for these activities can be found around the house or purchased inexpensively. For those looking to stock up on supplies, check out discount school supplies at RaymondGeddes.com. Encouraging a love for STEM from a young age can pave the way for future success in these important fields.