Looking for science experiments for preschoolers that are safe, fun and educational? At this age, children learn best through play, hands-on activities and a sense of wonder. Here are 3 simple science experiments you can do at home with 3 to 5-year-olds. They’re perfect for curious little minds—and you only need basic materials!
🌈 1. Colorful Volcano
Materials:
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1 clear plastic cup
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Baking soda
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Vinegar
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Food coloring
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Small spoon
Steps:
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Fill the cup halfway with vinegar and add a few drops of food coloring.
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Gently add one spoonful of baking soda.
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Watch the bubbly eruption!
What does it teach?
Cause and effect, early chemistry and basic science vocabulary like “mix” or “reaction”.
🧲 2. Sink or Float?
Materials:
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A large bowl filled with water
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A mix of small objects: cork, stone, coin, leaf, bottle cap, plastic spoon…
Steps:
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Place the bowl on a low table.
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Let your child drop the objects one by one into the water.
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Observe what sinks and what floats. You can also sort them by size or color.
What does it teach?
Prediction, observation, classification and new vocabulary.
🌬️ 3. Dancing Paper Strips
Materials:
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Tissue paper or thin paper strips
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A balloon
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Wool sweater or adult’s hair
Steps:
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Cut several thin strips of paper and lay them on a table.
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Inflate the balloon and rub it against wool or hair.
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Hold the balloon close to the paper… Watch them “dance”!
What does it teach?
Static electricity, curiosity and fine motor skills.
🏡 Learning Through Play
These science experiments for preschoolers are more than fun: they spark curiosity, encourage communication and improve coordination. Best of all, they create meaningful moments when done as a family.
📌 Extra tips:
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Always supervise the activity.
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Ask simple questions: What do you think will happen? Why is it floating?
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Use the opportunity to introduce new words and celebrate discoveries.
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