Do you have a junior scientist on your hands? One of the best things about science experiments for kids has to be the ease with which you can set so many up, classroom or home! Here are 12 science activities that are a fun way to engage your kiddos with easy-to-understand science concepts using simple materials. Plus, see how you can apply the scientific method or get set up for a science fair.



Curious kids turn into junior scientists with these fun and easy science experiments. This collection of middle school, elementary, kindergarten, and preschool science activities are “totally do-able” for use at home or in the classroom.

Our science activities have also been readily used with special needs groups in high school and young adult programs. Provide more or less adult supervision depending on your kids’ abilities!

There is so much you can teach your junior scientists! Keep the activities playful and simple as you mix a little of the “science” along the way.

These science experiments are also great for short attention spans. They are almost always hands-on, visually engaging, and filled with play opportunities!


We’ve put together a few separate resources for different age groups, but remember that many experiments will cross over and can be re-tried at several different age levels. Younger kiddos can enjoy the simplicity and hands-on fun. At the same time, you can talk back and forth about what is happening.

As kiddos get older, they can bring more complexity to the experiments, including using the scientific method, developing hypotheses, exploring variables, creating different tests, and writing conclusions from analyzing data.


What is the scientific method? The scientific method is a process or method of research. A problem is identified, information about the problem is gathered, a hypothesis or question is formulated from the information, and the hypothesis is tested with an experiment to prove or disprove its validity. 

Sounds heavy… What in the world does that mean?!? The scientific method should be used as a guide to help lead the process.

You don’t need to try and solve the world’s biggest science questions! The scientific method is all about studying and learning things right around you.

As kids develop practices that involve creating, gathering data evaluating, analyzing, and communicating, they can apply these critical thinking skills to any situation. Click here to learn more about the scientific method and how to use it.

Even though the scientific method feels like it is just for big kids…

This method can be used with kids of all ages! Have a casual conversation with younger kiddos or do a more formal notebook entry with older kiddos!

Click here to get your free printable Junior Scientist pack!


Click on each link below to see supplies, set up and process information, and quick science behind the activity information. Also, remember to grab our free printable Jr Scientist mini-pack!

Magic Pepper

Sprinkle some pepper in water and make it dance across the surface. Explore surface tension of water when you try this fun and easy pepper and soap experiment with the kids.

Pepper and Soap Experiment


Chromatography in chemistry is a technique that involves the separation of a mixture into its parts so you can see each one individually. Chemistry that’s suitable for our junior scientists!

Pull out the bin of markers and search for the black ones to get started with this fun chromatography lab!  Also try our leaf chromatography experiment!

Lemon Volcano

Your kiddos will love this erupting, fizzing chemical reaction! Best of all, you only need to grab a few items from your kitchen cupboard.

Lemon Volcano

Drops on Water On A Penny

A science experiments with things found in your purse or pocket!  How many drops of water can you fit on a penny? You will be surprised by the answer!

Drops Of Water On A Penny

Sink or Float

Open up the fridge and the pantry drawers and you have everything you need to explore buoyancy with common household foods and supplies! Kids will have a blast checking out the different ways they can experiment with sink or float.

Walking Water

A walking water science experiment is incredibly easy and fun to set up for our junior scientists! Learn about capillary action with colorful rainbow walking water.

Walking Water

Lava Lamp

Make your own homemade lava lamp with oil and water, and a simple chemical reaction.

Inflating Balloon

Find out how to blow up a balloon with just baking soda and vinegar. Fun chemistry with simple supplies!

Balloon Experiment


Exploring physics has never been so exciting because everyone loves to launch stuff into the air. Make a simple catapult with popsicle sticks!

DIY popsicle stick catapult Inexpensive STEM activity
Popsicle Stick Catapult

Color Changing Flowers

How to make color changing flowers. It’s all to do with capillary action!

Rubber Egg

Can you make an egg bounce? Answer this and more questions with our egg in vinegar experiment.


Science projects are an excellent tool for older kiddos to show what they know about science! Plus, they can be used in all sorts of environments including classrooms, homeschool, and groups. Kids can take everything they have learned about using the scientific method, stating a hypothesis, creating variables, and analyzing and presenting data.

Want to turn one of these experiments into an awesome science fair project? Check out these helpful resources.


Here are a few resources that will help you introduce science more effectively to your kiddos or students and feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

Click on the image below or the link for more fantastic kids’ science experiments.