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Need some super simple, fast science experiments and STEM challenges for your kids?
We adore hands-on science and engineering activities at our house!

Experimenting with the hows and whys of the world through interactive projects is the best way to spark curiosity, creativity, and a real love of learning.

Whether you homeschool, teach in a classroom, or just love family learning at home, these quick STEM activities will make science fun, exciting, and memorable — no complicated setup needed!

Why 5-Minute Science Experiments & STEM Challenges Are Perfect

• Quick setup — great for busy days

• Hands-on engagement — perfect for active learners

• Simple supplies — most you already have at home

• Encourages critical thinking and creativity

Use my Free STEM Lab Sheet to make any of these into a full lesson!

Super Simple STEM Activities and Science Experiments

These experiments are all easy to set up and perfect for kids to experience science firsthand!

Bottle Rocket Blast-off
– Launch a homemade rocket using baking soda and vinegar!
See the Bottle Rocket

Magnet-Powered Boats
– Explore forces by moving tiny boats with magnets.
See the Magnet Boats

Magnet Bottle Discovery
– Create a sensory bottle full of magnetic materials.
See the Magnet Bottle

Cabbage Juice pH Test
– Test acids and bases with colorful cabbage juice!
See the pH Experiment

Rainbow Walking Water
– Watch colors move and mix through paper towels!
See the Rainbow Science

Leaf Chromatography
– Explore plant pigments by separating colors in leaves.
See the Leaf Science

Square Bubbles
– Challenge: can you really make a square-shaped bubble?
See the Bubble Science

Self-Inflating Balloon
– Inflate a balloon with baking soda and vinegar!
See the Self-Inflating Balloon

Foamy Fountain (Elephant Toothpaste)
– Watch a foamy eruption with this fun chemical reaction.
See the Foamy Fountain

Rubber Eggs
– Make an egg bounce by dissolving its shell!
See the Rubber Egg Experiment

Expanding Soap in the Microwave
– Microwave soap and watch it grow into a cloud!
See the Expanding Soap 

Soda Bottle Geyser
– Create a spectacular geyser using soda and Mentos!
See the Soda Geyser

Mold Growing Experiment
– Learn the science of how mold grows with this gross yet fascinating experiment.
See the Mold Growing Experiment 

Balloon Rocket Challenge
– Engineer a balloon-powered zipline.
See the Balloon Rocket

Bristle Bots
– Build tiny robots and see how they move.
See the Bristle Bots

Make Paper Hold Up Books
– Use a few pieces of paper to hold up a pile of books!
See The Paper & Book Challenge

Glowing Invisible Ink Messages
– Write secret messages that reveal under blacklight using science!
See How to Make Invisible Ink 

Lemon Volcano Eruption
– Make a colorful mini volcano and explore chemical reactions.
See the Lemon Volcano

AND SO MANY MORE!  My site is virtually a goldmine of hands-on simple learning ideas.

Learning through hands-on activities doesn’t have to be complicated!  With just a few simple supplies and a spirit of curiosity, kids can dive into science experiments and STEM challenges that spark big ideas and creativity.

Whether you’re looking for a quick afternoon project or adding excitement to your school day, these super simple STEM activities are sure to inspire.

Be sure to bookmark this list or pin it for later!