Free Science Experiment Ideas for Kids
Hands-on science makes learning magical! Below you’ll find easy, printable science experiments for home or classroom use—perfect for grades K–8. Every experiment comes with step-by-step instructions, photos, and a worksheet.
Browse Our Growing Collection:
Test and compare how seeds grow in potting soil, clay, and sand—see why soil matters for gardens and farms!
Build a simple filter with cotton, sand, and charcoal to see how water gets cleaner through layers of natural materials.
Simulate DNA separation using food coloring and electricity—watch how molecules move through gel in this exciting biotech model!
Use stickers and plastic to make tiny channels that control how colorful water droplets flow and mix—just like a real micro lab!
Extract real DNA from a banana using soap, salt, and alcohol—an exciting intro to genetics for kids!
See cosmic rays from space using dry ice and alcohol vapor—watch real particles leave visible trails in your own mini detector!
Grow plants under red, blue, and white light to discover how different colors affect their growth.
Build a working lung model with a bottle and balloons—explore the respiratory system in action!
Use glitter to model how germs travel and why handwashing matters—an unforgettable science hygiene demo!
Watch evaporation, condensation, and precipitation happen in real time—right on your window!
Turn a needle, cork, and water into a working compass—explore Earth’s magnetic field in your kitchen!
Build a real working circuit and learn how electricity flows!
Test how eggs float or sink in salt water, fresh water, and more! A hands-on lesson in density.
Discover buoyancy and bubbles as raisins “dance” in a glass of soda—perfect for a kitchen science lesson!
Explore acids and bases with this easy, color-changing pH experiment for kids.
Grow edible crystals at home while learning about saturation and crystallization.
Harness the power of air and Newton’s Laws—race balloons down a string!
Make a bubbling lava lamp with oil, water, and fizzy tablets. Mesmerizing and easy!
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Invisible Ink
Write secret messages using lemon juice—then reveal them with heat like a real spy!
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