
100 Science Projects For 3rd Graders
Let's find out how the color of a building affects the temperature inside!
Easy
Do you want to make your flowers last longer? Try adding sugar to the water!
Easy
Let's explore the microorganisms on our hands and the objects we touch! We'll use agar plates and a microscope to see what we can find.
Easy
Let's find out how different types of soil affect the growth of a pinto bean!
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Have you ever wanted to grow your own yeast fungus? Now you can! In just two days, you can measure the amount of carbon dioxide released during the growth of ...
Easy
Are there liquefaction concerns where you live? In this science project, find out what happens when you add water to different types of soil to mimic liquefaction.
Easy
Let's find out if temperature affects the size of crystals!
Medium
Learn how to make a wind speed indicator with paper cups, cardboard, and a pencil!
Easy
Suspend a ball in a stream of air and feel the force of the air pushing it back in!
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Have you ever seen raisins swim? Find out how to make raisins swim with this fun science experiment!
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Get your hands messy with this mysterious substance! Is it a liquid or a solid? Mix, squish and play to uncover its secrets!
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See colors magically move in milk with soap! This fun experiment demonstrates surface tension in a vivid way!
Easy
Get ready to become a candy-making scientist! Grow your own giant sugar crystals and make rock candy you can eat!
Easy
How hard is that rock? You can learn how to classify your own rocks by their hardness just like geologists!
Medium
Let's explore how the forces of nature shape the land around us! We'll use sand, water, ice, and wind to observe how erosion works.
Easy
Make your own sparkling geode rock crystals at home with Borax and see science in action!
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Have you ever wondered what the difference between a rock and a mineral is? Find out with this sweet experiment!
Easy
Make your own sparkling rainbow crystals at home with Borax and see science in action!
Easy
Have you ever wondered how wind affects plants? In this experiment, you'll find out by comparing two plants in different wind conditions.
Easy
Create a fizzing, bubbling reaction with baking soda and vinegar! Learn about acid-base reactions and have fun while doing it!
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Did you know that some Skittles have a secret rainbow hiding inside them? It's true!
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Get ready to create a massive, bubbling tube of toothpaste using only a few simple ingredients! Don't miss out on the fun!
Easy
With just a few simple steps, creating a cloud in a jar can help us understand the process of cloud formation!
Easy
Have you ever wondered if the little brown grains of yeast you buy in the grocery store are alive? Let's find out!
Easy
Learn how to keep bread from spoiling by storing it in different environments!
Easy
Let's find out which beverage leaves the most stains on our teeth!
Easy
Can you tell the difference between an apple and a pear if you can't smell? Find out in this fun experiment!
Easy
Join us on an adventure to explore the different kinds of insects living on three different species of trees!
Easy
Let's find out if there are differences in how males and females perceive smells!
Easy
Make a magnetic chain reaction to launch a steel marble at a target at high speed!
Easy
Let's find out if the roots of a germinated green bean will grow towards moisture!
Easy
Do hamsters fight when placed in the same cage? Find out in this science project!
Easy
Does milk help plants grow better than water? Find out in this fun science project!
Easy
Does drinking soft drinks cause tooth erosion? Find out in this science project!
Easy
Hot cars can be cooled down with sunshades! Find out which type of sunshade works best in this science project.
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Let's find out which type of tape is the stickiest and requires the most force to pull off a steel surface!
Easy
Are you left-handed? Find out how many people are in the same boat as you in this science project!
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Watch the transformation of caterpillars into butterflies in just a few days!
Easy
Can chili peppers repel and even kill crickets? Find out in this fun science experiment!
Easy
Do boys or girls have better drawing skills? Find out in this fun science project!
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Have you ever wanted to make your RC car go faster? In this science project, you will find out how to make your RC car go faster by changing the ...
Easy
Can you tell the difference between a happy face and an angry face? Boys and girls aged 15 are put to the test to see who can identify facial expressions ...
Easy
Who can multitask better: boys or girls? Find out in this science project!
Easy
Do you want to know if watering plants makes them grow faster? Join us in this experiment to find out!
Easy
Do you want to know if your height affects how far you can walk in one step? Find out in this fun experiment!
Easy
Let's find out if organic fertilizer helps mung beans grow faster than regular fertilizer!
Easy
Does eating breakfast help students do better in school? Find out in this science project!
Easy
Ever wondered why water evaporates faster in some places than others? Find out in this fun science project!
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Does stress and anxiety affect our ability to remember? Find out in this fun science project!
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Can you make a bubble that won't burst? Find out with this fun science project!
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Does highlighting what you read help you remember more easily? Find out in this fun science project!
Easy
Can you tell the difference between musical notes? Find out if your left ear is better at recognizing musical notes than your right ear!
Easy
Let's explore how the number of stomata on pine tree leaves changes depending on the amount of traffic in the area!
Easy
Does acidic water make Zebra mussel shells softer? Let's find out!
Easy
Can eating too much sugar make you gain weight? Find out by feeding baby mice apples and jelly beans!
Easy
Have you ever seen a shooting star? What if you could collect the tiny rocks that make them?
Easy
Can you tell the difference between sweet, sour, salty, and bitter? Find out in this fun science project!
Easy
Do singers sound better after drinking cold water? Find out in this fun science project!
Easy
Does the pH level of soil affect how well grass grows? Find out with this fun science project!
Easy
Let's find out which clothing material is the best at keeping us warm!
Easy
Can animals see in the dark? Find out if dogs, cats and monkeys can see color in the dark!
Easy
Did you know you can change the color of flowers? With this science experiment, you can!
Easy
Do plants have a favorite color for photosynthesis?
Easy
Build a train that floats above a pair of magnetic tracks and can be pushed from one end to the other!
Easy
Can fish recognize when it's time to eat? Find out by creating a feeding schedule and observing your fish's behavior!
Easy
Discover how colors affect our emotions by observing cars, clothes, and favorite colors!
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Learn how to make a battery from potatoes and measure the voltage and current it produces!
Easy
Make a simple pinhole viewer to see the images carried by light shining through a pinhole!
Easy
Let's find out how different levels of nitrogen affect the growth of bean plants!
Easy
Can earthworms and water help plants grow? Join us in this experiment to find out!
Easy
Can plants grown in soil or hydroponically reach the same heights? Let's find out!
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Let's find out if plants grow bigger in a greenhouse or without protection!
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Learn how to make your own telegraph machine and send secret messages to your friends!
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Have you ever wondered what it would be like to have a blind spot? Find out by performing a simple experiment to discover your own blind spot!
Easy
Can you make a magnet stronger by wrapping it with wire? Let's find out!
Easy
Make a boat that uses steam to power it through the water! Learn about energy and propulsion with this fun project.
Easy
Let's find out how much water is in an orange! We'll use a kitchen knife, paper plate, aluminum foil, and a weighing scale to figure it out.
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Have you ever looked up at the night sky and wondered why stars twinkle? Find out in this fun science project!
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Can water hold up a weight? Find out by testing the surface tension of water with salt and temperature!
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Let's explore how hot and cold water affects the movement of water!
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Can you tell which object is better for our environment? Test your recycling sense with this fun experiment!
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Do you know which hand, foot, eye and ear you use the most? Find out with this fun experiment!
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Learn about the differences between plant and animal fats with this fun science project!
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Learn how to make a 3D magnetic field viewing bottle and explore the patterns of magnetic fields!
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Prove to yourself that Galileo was right! See if a feather and a coin fall at the same speed in a vacuum.
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Let's compare the soil types in two different counties and see which one is better for growing crops!
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Can the size of a seed affect how fast it grows? Let's find out!
Easy
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