Preschool Science Experiments

Young Learners Science Club

I get asked all the time what science looks like at our house, especially during the preschool years. This post about Preschool Science Experiments shares the activities that actually worked for us and kept everyone curious.

When I first started searching for hands-on ideas, I wanted activities that were simple and used things we already had. That’s why I put together my list of Simple Homeschool Science Experiments for Kids. It became my go-to spot when I needed ideas without overthinking.

Below, I’m walking you through how I keep science approachable, what kinds of topics naturally come up, and my favorite activities to try at home. If you’re looking for easy ways to explore science with preschoolers.

collage of Preschool Science Experiments

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How to make learning about science fun for preschoolers

Science does not need to feel formal or complicated at this age. I focus on keeping things playful and open-ended, so curiosity leads the way. If you’re just getting started, I shared more tips in this post about how to begin teaching science at home.

  • Let kids explore materials before explaining what will happen
  • Ask simple questions and listen to their guesses
  • Repeat activities on different days to notice changes
  • Keep sessions short and stop while interest is high

Preschool Science Books Worth Grabbing

I always like to have a small stack of science-themed books nearby when we try experiments. Reading together helps connect new ideas to familiar stories and keeps interest going beyond the activity.

STEAM Play & Learn: 20 fun step-by-step preschool projects about science, technology, engineering, art, and math!STEAM Play & Learn: 20 fun step-by-step preschool projects about science, technology, engineering, art, and math!Mudpies to Magnets: A Preschool Science CurriculumMudpies to Magnets: A Preschool Science CurriculumPreschool Hands-On STEAM Learning Fun Workbook (Highlights Learning Fun Workbooks)Preschool Hands-On STEAM Learning Fun Workbook (Highlights Learning Fun Workbooks)Busy Little Hands: Science Play!: Learning Activities for PreschoolersBusy Little Hands: Science Play!: Learning Activities for PreschoolersBig Chemistry Experiments for Little Kids: A First Science Book for KidsBig Chemistry Experiments for Little Kids: A First Science Book for KidsThe Berenstain Bears' Big Book of Science and Nature (Dover Science For Kids)The Berenstain Bears’ Big Book of Science and Nature (Dover Science For Kids)

 

Science topics to talk about with preschoolers

Conversations about science happen naturally when kids are allowed to wonder out loud. These are topics that often came up during our activities.

  • Colors and mixing: how shades change when combined
  • Weather patterns, noticing rain, clouds, and temperature
  • Nature and animals observing plants, bugs, and habitats
  • Cause and effect: what happens when something changes

Preschool science printable packs to support learning

Sometimes I like having printable materials ready for quieter moments. The science packs in my shop give kids a way to continue exploring themes through play and hands-on pages.

Little Learners Print and Go Activity Kit: Space

What can kids learn from these science activities?

Preschool science is about building basic skills through exploration. I’ve seen so much growth just by keeping things relaxed and engaging.

  • Problem-solving through trial and error
  • Observation by watching reactions and results
  • Language development from describing what they see
  • Patience while waiting for changes to happen
collage of Preschool Science Experiments

Supplies needed for preschool science activities

Having a small supply bin makes planning easier. These are items I reach for often.

  • Food coloring
  • Baking soda and vinegar
  • Clear cups or jars
  • Paper towels
  • Plastic bags
  • Measuring spoons
  • Water

More science experiments to try

If you’re looking for additional ideas, there are always more simple experiments you can rotate in. Swapping activities keeps things fresh while still using familiar materials.

Simple Magic Skittles Experiment
Kids can explore color movement using candy and water. Watching the colors spread across the plate always leads to fun predictions.
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The final output of the How to Grow a Rainbow Experiment
How to Grow a Rainbow Experiment
Paper towels and water help show how colors travel. The moment the colors meet is always exciting to watch.
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water cycle bag experiment
Water Cycle Bag Experiment
A clear bag makes it easy to see how water moves through a simple cycle. Checking the bag daily helps kids notice small changes.
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Elephant Toothpaste Experiment
A foamy reaction grabs attention fast during this activity. Talking through the steps helps keep it manageable.
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A picture of Floating Egg Science Experiment showing two eggs, one floating and one sinking.
Floating Egg Science Experiment
This activity introduces density using water and salt. Making predictions adds an extra layer of interest.
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Image of Snowy Winter Slime Recipe
Snowy Winter Slime Recipe
Sensory play as this works well on cold days indoors. Mixing the ingredients keeps hands busy and focused.
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end result of Invisible Ink Experiment
Invisible Ink Experiment
Writing hidden messages makes this activity feel special. Revealing the words leads to lots of curiosity.
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Simple Dissolving Peeps Science Experiment
Simple Dissolving Peeps Science Experiment
This experiment focuses on observing change over time. Checking progress throughout the day encourages patience.
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photo of Fun Fizzy Apple Volcano Science Experiment
Fun Fizzy Apple Volcano Science Experiment
This activity combines fruit with a fizzy reaction. The bubbling keeps interest strong from start to finish.
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Dancing Hearts Experiment
Movement appears in a surprising way during this experiment. Dropping the hearts into the liquid feels like a game.
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Heart Magic Milk Experiment
Heart Magic Milk Experiment
Milk and color work together to show motion. Watching the patterns form is always engaging.
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Cool Magic Milk Experiment
Magic Milk Experiment
A classic setup creates colorful movement in seconds. Letting kids add the color keeps them involved.
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An image of the dancing worms activity where bubbles begin to form
Dancing Worms Activity
Candy worms help demonstrate movement in this experiment. Careful watching makes the changes easier to notice.
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https://littlebinsforlittlehands.com
Frost On A Can Winter Experiment
Cold air and moisture come together in this winter activity. Watching frost appear feels almost magical.
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https://theresjustonemommy.com
Plastic Egg Submarines
Floating and sinking can be explored with simple adjustments. Changing the weight leads to different results.
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http://www.learnplayimagine.com
How to Make Lightning
Static electricity is introduced here in a safe way. The results happen quickly and clearly.
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Yellow School Bus Science Experiment
https://www.kindergartenworksheetsandgames.com
Yellow School Bus Science Experiment
Color changes and reactions are the focus of this activity. The visual shift is easy to spot.
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Wrapping science into our days never required complicated plans. These science projects gave us meaningful moments together and built confidence through exploration.

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