Science Projects for Kids

If you’re looking for science projects for kids, I have a mega list for you that’s 100% kid-tested.

men love to wonder and that is the seed of science emerson

Note: This post contains affiliate links

My children and I have worked our way through a LOT of science projects over the past few years, so I compiled them into one easy-to-find spot. If you’d like more ideas like this, you’ll love my best-selling book, TinkerLab: A Hands-on Guide for Little Inventors.

Most of these science projects and experiments will be engaging for children ages 3 and up, although I did MANY of them with my 2-year olds.


Science Projects for Kids

These projects fall into five categories:

  1. Physics
  2. Chemistry
  3. Engineering
  4. Technology
  5. Biology
  6. Geology


Corncob Popcorn Experiment :: Tinkerlab

How to Make Popcorn on a Cob

Magical Plastic Bag Experiment: Learn about the magic of polymers as you poke pencils through a water-filled bag…and notice that not a drop of water leaks through the holes!

Floating Egg Experiment

Magnet Magic: Move Paper Clips through Water with Magnets

Is it Magnetic? Testing objects for magnetism


dry ice experiment

Soap Making with Kids

How to Make Gak (Slime): This recipe is amazing and so much fun to play with

Growing Gummy Bear Experiment: Fill a small bowl with water, drop in gummy bears, and see what happens. Extend this into an experiment by replacing the water with other liquids, or replacing the gummy bears with other candies.

Dry Ice Experiment: Fill a metal container with a small piece of dry ice and water, and let the experiments begin!

How to Make Natural Dyes: These are great for egg dyeing

Microwave Marshmallow Experiment: What happens when you microwave a marshmallow?

Rock Candy Experiment: Make your own rock candy with sugar and water.

Yeast and Sugar Experiment: Fill a bottle with a combination of yeast, water, and sugar, cover the bottle with a balloon, and then watch the balloon grow as the yeast reacts to the sugar-water mixture.

How to Make Curds and Whey: A Science Demonstration

How to Set up a Magic Potion Lab

Lava Lamp (below): A wild mixture of oil, water, and the magic ingredient: antacid tablets. This activity is in my book, TinkerLab: A Hands-on Guide for Little Inventors. The link will take you there!

30 Fun Science Projects for Kids


Easy Steps for building a Rube Goldberg Machine with Little Kids | TinkerLab.com

How to Make a Marble Run with Kids

Make a Rube Goldberg Machine

Build with Box Rivets


Makey Makey Kit

Stop Motion Animation for Beginners

Makey Makey Piano, Invention Kit for Kids

Snap Circuits DIY Spin Art Machine


How to make a Terrarium

Plant a Garden with Kids

Make a Terrarium

Celery Science Experiment

How to Grow Wheatgrass


egg geodes

How to Grow Crystals from Rocks

How to make an Egg Geode


  1. Hi Rachell
    I tried to get the recipe for the lava lamp, but couldn’t when I clicked on it. Can you send it to me? The one above with the oil and colors.
    Thanks in advance.

  2. I was thinking for making any science project but i didn’t know any website for science project and then i read about “tinkerlab.com”. So i visited and got ample knowledge about science project.

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