Fun STEM Activities for Kids

Fun stem activities for kids

What is STEM?

STEM stands for Science, Technology, Engineering, and Mathematics. It is an educational approach that emphasizes teaching these four disciplines in an integrated and interdisciplinary way. STEM education is designed to promote skills and knowledge in these areas, as well as critical thinking, problem-solving, creativity, and innovation.

STEM education can take many forms, from traditional classroom learning to hands-on, project-based activities and experiments. It is designed to prepare students for careers in fields such as engineering, computer science, medicine, and other STEM-related fields, which are in high demand in the modern workforce.

STEM education is also seen as a way to help address the global challenges facing society today, such as climate change, renewable energy, and technological innovation. By promoting skills and knowledge in science, technology, engineering, and mathematics, STEM education aims to prepare students to tackle these challenges and contribute to a better future for all.

Easy and Fun Stem Activities for Kids

Here are some examples of easy STEM activities that can be done at home with simple materials:

1. Build a Marshmallow Tower

Give kids a bag of marshmallows and some toothpicks and challenge them to build the tallest tower they can. This activity promotes creativity, problem-solving, and engineering skills. Here are the simple steps to build a marshmallow tower:


  • Marshmallows
  • Toothpicks


  • Begin by dividing the marshmallows and toothpicks into small groups and set them on a work surface
  • Take a toothpick and insert it into one marshmallow
  • Take another marshmallow and push it onto the other end of the toothpick
  • Add another toothpick to the exposed marshmallow, and add a third marshmallow on top
  • Repeat steps 2-4 until you have created a tower that reaches your desired height
  • You can experiment with different designs and structures, such as creating a pyramid or a bridge, to see which design is the strongest and most stable


  • Make sure to use fresh marshmallows that are still soft and pliable, as older marshmallows can become hard and difficult to work with
  • Try to distribute the marshmallows evenly along the length of the toothpicks to create a stable and balanced structure
  • Use longer toothpicks or wooden skewers to create taller towers or more complex structures

Building a marshmallow tower is a fun and easy STEM activity that can be done with simple materials and can help kids develop important skills in engineering, problem-solving, and critical thinking.

2. Make Slime

Making slime is a fun and engaging STEM activity that can help kids learn about the properties of materials and chemical reactions. Here are the simple steps to make slime:


  • White school glue
  • Water
  • Borax powder
  • Food coloring (optional)


  • Begin by mixing 1/2 cup of white school glue with 1/2 cup of water in a bowl
  • If desired, add a few drops of food coloring to the mixture and stir until the color is evenly distributed
  • In a separate bowl, mix 1/2 cup of warm water with 1/2 teaspoon of borax powder
  • Slowly pour the borax solution into the glue mixture, stirring continuously
  • Keep stirring until the mixture begins to clump together and pull away from the sides of the bowl
  • Use your hands to knead and stretch the slime until it becomes smooth and stretchy
  • If the slime is too sticky, you can add more borax solution a little bit at a time until it reaches the desired consistency


  • Use non-toxic and safe ingredients, and supervise children during the activity
  • Store the slime in an airtight container when not in use to prevent it from drying out
  • Experiment with different colors and add-ins, such as glitter, beads, or foam balls, to create different textures and effects

Overall, making slime is a fun and easy STEM activity that can help kids learn about the properties of materials and chemical reactions.

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3. Create a Catapult

Creating a catapult is a fun and engaging STEM activity that can help kids develop important skills in physics, engineering, and problem-solving. Here are the simple steps to create a catapult:


  • Popsicle sticks
    Rubber bands
  • Plastic spoon
  • Small object to launch (such as a marshmallow or a small ball)


  • Begin by laying out 5-7 popsicle sticks side by side on a flat surface
  • Take two rubber bands and stretch them around the ends of the popsicle sticks, securing them in place
  • Stack another layer of popsicle sticks on top of the first layer, perpendicular to the first layer
  • Use two rubber bands to secure the second layer of popsicle sticks in place
  • Place a plastic spoon at the base of the catapult, on the side opposite to the rubber bands
  • Use a final rubber band to secure the spoon in place, with the handle of the spoon extending out over the popsicle sticks
  • Load the small object onto the spoon
  • Pull back on the spoon, stretching the rubber bands, and release to launch the object


  • Experiment with different designs and materials, such as using larger or smaller popsicle sticks or adding weight to the base of the catapult to increase stability
  • Use safety precautions when launching objects, such as aiming away from people and fragile objects
  • Keep track of how far the object travels and experiment with different amounts of force and angles to launch the object

Overall, creating a catapult is a fun and easy STEM activity that can help kids develop important skills in physics, engineering, and problem-solving.

4. Build a Solar Oven

Building a solar oven is one of the very interesting STEM activities that can help kids learn about renewable energy and the science of heat transfer. Here are the simple steps to build a solar oven:


  • Cardboard box (medium to large size)
  • Aluminum foil
  • Plastic wrap
  • Black construction paper
  • Scissors
  • Tape
  • Ruler


  • Begin by lining the inside of the cardboard box with aluminum foil, shiny side facing outwards. Use tape to secure the foil in place
  • Cut a piece of black construction paper to fit the bottom of the box, and place it inside the box
  • Use scissors to cut a flap in the top of the box, leaving a border of at least 1 inch around the edges
  • Cover the flap with plastic wrap, using tape to secure it in place
  • Use a ruler to prop open the flap at an angle, creating a slanted surface that will capture the sun’s rays
  • Place the solar oven in direct sunlight and allow it to preheat for 30-60 minutes
  • Once preheated, place food or a container of water on the black construction paper inside the box
  • Close the plastic wrap-covered flap and use tape to seal any gaps
  • Leave the food or water in the solar oven for several hours, checking periodically to see if it has been cooked or heated


  • Use a large box to create a bigger solar oven, which will be able to cook larger amounts of food
  • Experiment with different types of food to see how they cook in the solar oven
  • To increase the oven’s efficiency, use mirrors or reflective materials to direct more sunlight into the oven

Building a solar oven is a fun and easy STEM activity that can help kids learn about renewable energy and the science of heat transfer.

5. Design a Paper Airplane

Designing a paper airplane is a classic STEM activity that can help kids develop important skills in aerodynamics, engineering, and problem-solving. Here are the simple steps to design a paper airplane:


  • Piece of paper (8.5 x 11 inches)


  • Begin by folding the paper in half lengthwise, creasing the fold with your fingers
  • Unfold the paper and fold the top corners down to the center crease, creating a triangle shape at the top of the paper
  • Fold the top edges down again, this time creating a sharper triangle shape
  • Fold the entire paper in half along the original crease, with the pointy end facing down
  • Create wings by folding down the top layer of the paper at a 45-degree angle, starting from the tip of the triangle and ending at the bottom of the paper
  • Repeat on the other side to create symmetrical wings
  • Fold the wings down again along the same 45-degree angle, starting from the top of the previous fold and ending at the bottom of the paper
  • Fold up the bottom of the paper to create a small triangle at the bottom of the plane
  • Finally, fold the wings down once more, but this time at a slightly less severe angle, creating a more gradual slope


  • Experiment with different shapes and angles to see how they affect the flight of the plane
  • Use lightweight paper for better flight performance
  • Make sure the folds are crisp and sharp to create a more aerodynamic shape
  • Overall, designing a paper airplane is a fun and easy STEM activity that can help kids develop important skills in aerodynamics, engineering, and problem-solving

6. Make a Balloon Rocket

Making a balloon rocket is a fun and engaging STEM activity that can help kids learn about physics, motion, and energy transfer. Here are the simple steps to make a balloon rocket:


  • Balloon
  • String or fishing line
  • Two chairs or other supports
  • Tape
  • Straw
  • Scissors


  • Begin by tying one end of the string or fishing line to one chair or support, and the other end to the other chair or support. The string should be tight and level
  • Thread the straw onto the string or fishing line, positioning it in the middle
  • Inflate the balloon and hold it closed with your fingers
  • Use tape to attach the balloon to the straw, making sure it is pointing in the same direction as the string
  • Release the balloon and watch it travel along the string, propelled by the escaping air


  • Experiment with different lengths and tensions of string to see how they affect the speed and trajectory of the balloon rocket
  • Try using different sizes of balloons to see how they affect the amount of force generated
  • Use markers or stickers to decorate the balloon and make it more visually appealing

Overall, making a balloon rocket is a fun and easy STEM activity that can help kids learn about physics, motion, and energy transfer.

7. Build a Straw Bridge

Building a straw bridge is a fun and challenging STEM activity that can help kids develop important skills in engineering, design, and problem-solving. Here are the simple steps to build a straw bridge:


  • Drinking straws
  • Tape
  • Scissors
  • Weights (such as pennies or small rocks)


  • Begin by cutting the straws into pieces of equal length. These will be the building blocks for your bridge
  • Take two pieces of straw and tape them together end-to-end to create a longer piece. Repeat this process until you have several long pieces of straw
  • Lay out two parallel lines of tape on a flat surface, representing the supports for your bridge
  • Take two of your longer pieces of straw and place them perpendicular to the tape supports, positioning them to form a square. Tape the ends of the straws to the tape supports to hold them in place
  • Add additional pieces of straw to create the top of your bridge, using tape to attach them to the supports and to each other. Be sure to create a sturdy structure that can hold weight
  • Test your bridge by adding weights to the top, such as pennies or small rocks. See how much weight it can hold before collapsing
  • Make adjustments as needed to strengthen your bridge and try again


  • Experiment with different designs and shapes for your straw bridge, such as triangles or arches, to see which ones are the strongest
  • Work in a team to build a larger and more complex bridge, combining multiple designs
  • Use a ruler or measuring tape to ensure that your pieces of straw are all the same length
  • Using straws and tape, kids can build a bridge that can support the weight of small objects like coins or toy cars. They can experiment with different bridge designs and see how they affect the bridge’s strength

8. Create a Homemade Volcano

Creating a homemade volcano is a classic STEM activity that can be both educational and fun for kids. Here are the simple steps to create a homemade volcano:


  • Baking soda
  • Vinegar
  • Dish soap
  • Red food coloring (optional)
  • Playdough or modelling clay
  • Small plastic bottle or jar


  • Begin by forming the base of your volcano using playdough or modelling clay. Shape it into a cone with a hollow center where the eruption will occur
  • Insert a small plastic bottle or jar into the center of the playdough cone, with the opening facing up. This will serve as the container for the “lava”
  • Add a few drops of red food coloring to the container to create a more realistic lava effect (optional)
  • Add about 1/4 cup of baking soda to the container
  • In a separate container, mix together 1/2 cup of vinegar, a few drops of dish soap, and a few drops of red food coloring (optional)
  • Quickly pour the vinegar mixture into the container with the baking soda. Be prepared for an immediate chemical reaction as the two substances mix together, causing the “lava” to erupt out of the volcano
  • Repeat the experiment as many times as desired, adjusting the amounts of baking soda and vinegar as needed to achieve different eruption heights and durations


  • Experiment with different ratios of baking soda and vinegar to see what produces the best eruptions
  • Try adding other ingredients to the mixture, such as glitter or food coloring, to create different effects
  • Use a tray or other container to catch any overflow of the “lava” and make cleanup easier


STEM activities often involve multiple disciplines, such as math, science, and engineering. This can help kids see how different subjects are interconnected and can be used together to solve problems. It also often involve collaboration and teamwork, encouraging kids to work together and share ideas.
If your kids have fun with these STEM activities, then it is a great way to take the next step in encouraging their interest in STEM.

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