Science Experiments for 2 and 3 Year Olds
It’s never too early to start introducing your kids to science and these science experiments for 2 and 3 year olds are the perfect place to start!

This article may contain affiliate links to products that may help you when homeschooling preschool.
Why Science Experiments are Important for 2 and 3 Year Olds
With the most basic introduction to things like capillary action, density, chemical reactions, magnetics and so much more, your kids will have a ton of fun without even realizing everything that they are learning about!
Making science enjoyable at such a young age will help reinforce just how much fun learning can be!
Science experiments are a full sensory experience.
Kids have a chance to observe, hear, smell, and touch throughout the activity.
Different colors and textures in the materials used for the science experiments will draw in your kids.
This also provides an opening for a conversation about what colors are present and if the colors will change when the science activity is finished.
You can also discuss if things are hard, soft, bumpy, or smooth.
Kids are naturally curious which provides motivation for them to complete the activity.
They are interested in the cause and effect of what will happen when something is added or removed.
Having discussions about what happened and why your kids think that happened is a great way to get them thinking and reasoning.
Most science experiments require steps to be completed in a particular order.
By doing activities like the ones listed below, your kids are learning how to follow directions in order which is a skill that they will use daily in their lives.
Maybe the skills will even transfer over to them doing their nightly routine more independently.
(A mom can dream, right?!?)

Supplies Needed for Science Experiments with Toddlers
While each science experiment has its own list of supplies, here is a general list of items:
- water
- food coloring
- paper towels
- cups (some call for mason jars)
- shaving cream
- droppers (can be used as squeeze bottles)
- dish soap
- spoon / stir sticks
- oil (plant based, mineral, or baby)
- small objects / toy figures
- ice cube tray or small bowls
- baking soda
- vinegar
- balloons
- cornstarch
- straws
- string
- permanent marker
Now you are ready to have a great time experimenting!
Fun Science Experiments for 2 and 3 Year Olds
Toddler Approved Science Experiments
It’s never too early to start introducing your kids to science and these science experiments for two and three year olds are the perfect place to start!
With the most basic introduction to things like capillary action, density, chemical reactions, magnetics and so much more, you kids will have a ton of fun without even realizing everything that they are learning about! Making science enjoyable at such a young age will help reinforce just how much fun learning can be!
Learn a bit of simple science with this fun and easy Walking water STEM Activity for kids. Watch and learn why the water moves and mixes colors all by itself.
For a fun and easy science experiment that explores weather – try this Rain Cloud in a Jar experiment. Kids can learn how it rains through this fun and engaging science experiment.
Show your child how soap works with this simple science experiment! Use at home items to wow your kids and get them excited for STEM!
How to Use Skittles to Explore Primary Colors and Secondary Colors
Skittles can be used to teach children about primary colors and how to combine them to make secondary colors.
Sink or float science and STEM experiments are popular with early education and early elementary school teachers. These experiments are easy to prepare and conduct and have a fun wow factor with students.
A Disney in Ice Escape activity that will allow your child to explore with different tools and help them break the Disney figurines out of the ice!
Need a new science experiment to try in this cold weather? This foaming rainbow is sure to add color to dreary winter days!
Are you looking for new fun science activities for kids? Then try this cool Dancing Grapes Experiment with your children.
Nothing is cooler than rocks, lava, and chemical reactions. Combine all three of these things in this super-simple, super-cool simple volcano experiment where kids can learn just exactly why lava rocks are bumpy.
This fascinating frozen lava lamp science experiment is a great way to show kids the science behind why oil and water don’t mix. It’s super simple to set up with just 3 common household ingredients!
This Color Changing Milk Experiment is so fun and easy to do with kids while they learn so much!
Combine Science and art with this fun way to explore magnets in a minimal-mess-free way- painting with magnets!
<I Watermelon Volcano Experiment - Summer Activity for Preschoolers
Kids will go nuts over this watermelon volcano project! This watermelon experiment allows kids to witness the chemical reaction when baking soda and vinegar mix.
This balloon rocket experiment is such a fun balloon activity for kids that teaches some simple physics while having fun. All you need for this balloon straw rocket are a few materials and you are ready to start learning, exploring, and having fun with balloon science!
Oobleck is cornstarch and water that when mixed together can act like a solid and a liquid. This oobleck recipe is simple and fun to do.
