100+ Easy & FUN Science Fair Project Ideas
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Looking for FUNÂ science projects for kids? Science is one of our favorite subjects around here. I have a huge list of over 100 easy science experiments for kids. You can use these classic science fair ideas when helping your child create their next science fair project. Kids will love these fun projects and experiments!
See my Scientific Method Worksheets and Posters to help teach the process of the scientific method including these 6 steps:
- Ask a question
- Research
- Make a hypothesis
- Experiment
- Record Data
- Analyze
These science fair project ideas can be used for may grade levels including elementary school aged kids, middle school aged kids and some would even work for high school. Many of these science activities are quick and easy to put together and will not break the bank either.
I divided the science fair project ideas out the best I could by topic and category for you. That way if there is a certain interest, you can find just what you are looking for. You will find science fair experiment ideas in biology, physics, chemistry, electricity, magnetism, earth science, and more!
All of these simple experiment ideas can be used in some way to create an awesome science fair project. Most are from my site, but many are from some other great bloggers! Click the links to get instructions and demonstrations on how these projects work.
Want more ideas? See also my post with 200 + Elementary STEM Projects.
Easy Energy and Physics Science Fair Projects
Kinetic Energy with Rubber Band Boats– this science project is a blast to create with kids!
Kinetic Energy- Shooting Star Spinner– This is a fun one on kinetic and potential energy
Kinetic Energy Gravity Spinner – Do this experiment to show gravity!
Perpetual Motion Candle See Saw– This is a cool way to learn about motion!
How Does a String Telephone Work? ~Raising Life Long Learners
Which Cup Will Keep Water Cold the Longest? ~ Really, Are you Serious?
Light Refraction Science Experiment ~ Look We’re Learning
Heat Conduction Experiment ~ Look We’re Learning
Color Changing Sensory Bottle ~ The Science Kiddo
Color and Light Reflection and Refraction Experiments
Light Box Magic ~ True Aim Education
Balloon Air Pressure Experiment ~ Darcy and Brian
Technology & Mechanical Science Projects for Kids
Is it Conductive?– test different objects to see if they conduct electricity.
How to Make a Coin Battery – use coins to power a light!
How to Make a Lemon Battery– the power of lemon juice is pretty amazing.
What to Make a Dirt Battery – a battery out of dirt? Â yup!
How do you Make a Potato Battery? ~from STEAM Powered Family
How to Make a Hydraulic Elevator ~ Make a water powered elevator
How to Make a Bubble Blower Machine
Paper Circuits– learn about circuits and electricity with this simple project.
Solar Powered Lego Car– harness the power of the sun!
Make an EASY Water Pump Sprinkler
Chemistry Science Projects for Kids With Chemical Reactions
Cabbage Juice pH Experiment– test different chemicals and substances to see their pH levels.
How too Make an Erupting Volcano (with salt dough)
Why Do Baking Soda and Vinegar React?
How Do you Grow Crystals? (borax crystals)
Elephant Toothpaste with Two Types of Peroxide
What is Non-Newtonian Fluid? (Oobleck Experiments)
Does it Rust? Oxidation Experiment
Dancing Acorns ~ Hands-on Teaching Ideas
States of Matter Experiments– solids, liquids and gases
Rubber Bouncing Egg Experiment
Color Changing Flowers Experiment ~ Messy Little Monster
Paper Burning Experiment ~ Preschool Powol Packets
How to Make a Paper Mache Erupting Volcano ~ Red Ted Art
Anatomy Science Fair Projects
Animal Digestion Experiment ~ Schooling a Monkey
Why We Need Muscles & Bones ~ I Can Teach My Child
How Do Lungs Work?  ~ Sciene Sparks
Earth Science and Nature Science Fair Projects
Can You Build a House to Resist an Earthquake?
Make your Own Crystal Rock Candy Geodes
Study surface tension with Water Strider Insects
Geology Experiment: Stalactites and Stalagmites Formation
How Can We Stay Dry During the Rain ~ Pink Stripey Socks
What Surfaces in my House are the Dirtiest? Mold Science
Density Experiment with different liquids, also tests buoyancy!
Why Do Leaves Change Colors? Leaf Chromatography Experiment
Soda Bottle Compost ~ Busy Mommy Media
Build a Sun Shelter ~ Buggy and Buddy
Hurricane Model Experiment ~Preschool Powol Packets
Easy Condensation Experiment – Look We’re Learning
Salt Water Density Experiment ~ The Science Kiddo
Plant Science- Observing Bulb Growth ~Buggy and Buddy
How to Make a Compass ~ Parenting Chaos
Why do Pinecones Open & Close? ~ Parenting Chaos
Leaf Transpiration Experiment– how leaves breathe, use a plastic bag to collect the moisture from a tree.
Pumpkin Petri Dishes ~ Hands-on Teaching Ideas
Rainy Day Science– learn about filtering rain water
Making a Solar Still– harness the power of the sun with this cool science experiment!
How are Sedimentary Rocks & Fossils Made?Â
How Do Sharks Float? ~ Preschool Powol Packets
What Soil is Best for Growing Seeds? ~ Schooling a Monkey
Simple Food Science Fair Project Ideas
Want a food-based science fair project? Â These ideas are fun and edible, too! Â Who doesn’t love learning with food?
Food Science: Make a Loaf of Bread in a Bag
Why Does Gelatin Not Set with Certain Fruits?
What Foods will Grow the most Mold?
Popcorn and Salt Science Experiment ~ Awe Filled Homemaker
What Prevents Apples from Browning?
How to Make Plastic with Gelatin ~ STEAM Powered Family
Melting Ice Science Experiment ~ The Chaos and the Clutter
Food Chemistry~ Turn Juice into Noodles!
Green Eggs Food Chemistry (no food coloring required!)
How Strong are Eggs? ~ Hands-On Teaching Ideas
Hot Chocolate Science Experiment ~ Creative Family Fun
Bread Mold Science Project ~ Schooling a Monkey
Other Fun & Easy Science Project Ideas
Toilet Paper Comparisons  ~ Pink Stripey Socks
Hockey Science Experiment ~ Creative Family Fun
I hope you found an idea that will work for your little scientists next science fair project. I’d love to hear what you did and see pictures of the finished project!
