Middle School Science Fair Projects

These ideas for middle school science fair projects are great inspiration for award-winning displays! These science experiments explore age-appropriate concepts, from electrolysis to chemistry.

If you’re short on time and need some inspiration to jumpstart your creativity, check out KiwiCo’s monthly science kits for kids.

  1. Science Fair Projects for 6th Grade

    • Visual aid of how to complete Skittles Science Fair Project

      If you have more candy than you know what to do with, try this experiment with your little ones. Sometimes playing with food is inevitable, but with sweet science comes knowledge!

    • Visual aid of how to complete Lava Lamp Science Project

      Make your own colorful, bubbling, homemade lava lamp with this fun science experiment about mixing up unmixable liquids!

    • Visual aid of how to complete Pop-Top Rockets
      Pop-Top Rockets

      (Ages 12-16)

      Celebrate the 4th of July with a pop and a bang! These mini rockets are so easy to make and so fun to set off, you’ll want to launch them again and again.

      Parent supervision and eye protection are highly recommended for this project! Never point your pop-top rocket at yourself or anyone else. This project must be done outside.

    • Visual aid of how to complete Graphite Circuit
      Graphite Circuit

      (Ages 9-16)

      Can you complete an LED circuit using a graphite pencil? Learn about the conductive properties of graphite and draw your own design to see it light up! This is a super quick and easy science experiment that is entertaining for both kids and adults alike.

    • Visual aid of how to complete Balloon Hovercraft

      You don't need high-tech gadgets to make your own hovercraft! This balloon-powered toy is easy to make with household materials and is a ton of fun to send zooming around! We had so much fun passing the hovercraft across a long table. A light push sends it gliding along in a straight path. And, the balloon had enough air in it for a few pushes, which means you can involve a few friends. Keep blowing the balloon up for more and more fun!

  2. Science Fair Projects for 7th Grade

    • Visual aid of how to complete Copper Plated Coins

      Use some household materials to plate your coins with copper! You can also try copper plating designs onto your coins!In this project, you’re going to do two things: put copper into a solution, and make that copper come out of the solution and stick to another piece of metal (the quarter). That first process is called “electrolysis” and the second is called “electroplating.” So how do you do those things? Well, their scientific-sounding names give you a clue: with electricity!

      Electrolysis is a way to dissolve bits of metal into acidic liquids like vinegar. When you run electricity through vinegar, the vinegar helps to carry electricity from one side of the circuit to the other. Those bits of the vinegar react with the copper, making little bits of copper leave the positive side of the circuit and go into the liquid. You’ll see this happening when your solution turns blue.

      Electroplating is a way to put those little bits of copper onto something else. The bits of copper are ionic, which means they have an electrical charge, like a balloon that you rubbed on your hair. And just like a charged-up balloon, ions love to stick to things! By giving them another electrified metal, they rush out of the solution and onto the metal’s surface. You’ll see this when your quarter starts to change colors. With just a little electricity, you can use electrolysis and electroplating to plate a quarter with copper. Does that make it look like a penny to you?

    • Visual aid of how to complete Splitting Water
      Splitting Water

      (Ages 9-16)

      Did you know that water is actually a chemical? That’s why we call it H2O--water is made up of the chemical elements, hydrogen and oxygen! What would water look like if you could split water into its two parts? Try out this experiment to find out!

    • Visual aid of how to complete Paper Airplane Launcher

      Take your paper airplanes to new heights by making a motorized launcher for them.

    • Visual aid of how to complete Rubber Band Helicopter

      Learn about helicopters by making a rubber band powered flying toy!

    • Visual aid of how to complete Fizzy Candy Balloon

      Harness the power of fizzy candy and soda to inflate a balloon without blowing! This experiment can be repeated many times with different sodas to see how each reacts differently and which creates the biggest balloon.

  3. Science Fair Projects for 8th Grade

    • Visual aid of how to complete Electromagnetic Train


      Did you know that electricity and magnetism are closely linked? In this project, experiment with the interplay between the two by building your own miniature electromagnetic train that zips down a track all by itself.  Be sure to check out the video instructions for an explanation of how it works!

    • Visual aid of how to complete Carbon Sugar Snake
      Carbon Sugar Snake

      (Ages 12-16)

      Make a fiery black snake rise from the ground with this exciting experiment! Using simple household ingredients, learn how a burning mixture of baking soda and sugar can create a stunning carbon snake. Always be careful when conducting experiments involving fire. Be sure to only light the sand on a safe fireproof base in a well ventilated area. Keep water nearby as a precaution. Remember to tie back long hair and never leave flames unattended or unsupervised by an adult.

    • Visual aid of how to complete Dancing Salt
      Dancing Salt

      (Ages 9-16)

      Discover how music creates vibrations you can see using salt and a portable speaker! Then try experimenting with different genres of music to see which ones make the salt dance more.

      What's going on?

      Speakers, like your Bluetooth speaker, produce sound by creating vibrations in the air. Normally, we only hear these vibrations, and we can't easily see them. Plastic wrap, though, is lightweight and thin enough to vibrate in response to the sounds coming from the speakers. These vibrations move through the plastic wrap unevenly, pushing and shoving the salt around in interesting patterns. As a song progresses, these vibrations change, and the salt moves as if it were dancing.

      If you can find a YouTube video of a pure tone (like a single, sustained note), observe what happens to the salt when you play that tone through the speakers. A pure tone will create a consistent, unchanging vibration in the plastic wrap. Instead of dancing around, the salt should collect in places in the plastic wrap that aren't vibrating, making patterns that depend on the frequency of the pure tone. Try a few other pure tones, one at a time, to see some other interesting patterns!

    • Visual aid of how to complete Penny Battery
      Penny Battery

      (Ages 9-16)

      Learn about electrochemical cells and make a battery using pennies, felt, and a salt water solution. Then, power a digital clock with it!

    • Visual aid of how to complete Plant Light Maze
      Plant Light Maze

      (Ages 9-16)

      Have you ever noticed how plants grow toward the light? Build this simple light maze, and watch the plant grow around the obstacles to reach the light! Try experimenting with different mazes and see how the plant reacts. Can your plant complete its maze?

Get inspired!