Third Grade Science Activities and Experiments

108 filtered results
108 filtered results
3rd grade
Science
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Design a Floating Cork Boat
Design a Floating Cork Boat
Activity
Design a Floating Cork Boat
Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?
3rd grade
Science
Activity
Test the Power of Baking Powder
Test the Power of Baking Powder
Activity
Test the Power of Baking Powder
Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!
3rd grade
Science
Activity
Measure the Moon
Measure the Moon
Activity
Measure the Moon
Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.
3rd grade
Science
Activity
Outdoor Adventures
Outdoor Adventures
Activity
Outdoor Adventures
Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!
3rd grade
Science
Activity
Make Your Own Marshmallows
Make Your Own Marshmallows
Activity
Make Your Own Marshmallows
Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!
3rd grade
Science
Activity
Balloon Air Pressure Magic
Balloon Air Pressure Magic
Activity
Balloon Air Pressure Magic
Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.
3rd grade
Science
Activity
Sunscreen Experiment
Sunscreen Experiment
Activity
Sunscreen Experiment
When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.
3rd grade
Science
Activity
Scent Science and Cinnamon Rolls
Scent Science and Cinnamon Rolls
Activity
Scent Science and Cinnamon Rolls
Explore aromas with your child and help boost her brain power with some fun and interactive science activities.
3rd grade
Science
Activity
Bake Chocolate Volcano Cupcakes!
Bake Chocolate Volcano Cupcakes!
Activity
Bake Chocolate Volcano Cupcakes!
Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."
3rd grade
Science
Activity
Hatch Your Own Praying Mantises
Hatch Your Own Praying Mantises
Activity
Hatch Your Own Praying Mantises
Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.
3rd grade
Science
Activity
Backyard Archeology
Backyard Archeology
Activity
Backyard Archeology
This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.
3rd grade
Science
Activity
Homemade Barometer
Homemade Barometer
Activity
Homemade Barometer
This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.
3rd grade
Science
Activity
Make a Water Magnifier!
Make a Water Magnifier!
Activity
Make a Water Magnifier!
Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water
3rd grade
Science
Activity
Watering Can Craft
Watering Can Craft
Activity
Watering Can Craft
This year on Mother's Day, try this gift project that brings together an appreciation for gardening with a hands-on lesson in art history.
3rd grade
Science
Activity
The Science of Sound
The Science of Sound
Activity
The Science of Sound
What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.
3rd grade
Science
Activity
How Old is That Tree?
How Old is That Tree?
Activity
How Old is That Tree?
Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!
3rd grade
Science
Activity
Play Whistle Hide-and-Seek
Play Whistle Hide-and-Seek
Activity
Play Whistle Hide-and-Seek
Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.
3rd grade
Science
Activity
Bounce an Egg
Bounce an Egg
Activity
Bounce an Egg
Explore scientific concepts with this experiment that introduces kids to the scientific method!
3rd grade
Science
Activity
Sense of Smell Activity
Sense of Smell Activity
Activity
Sense of Smell Activity
Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.
3rd grade
Science
Activity
Candy Corn Science
Candy Corn Science
Activity
Candy Corn Science
Young scientists develop a hypothesis, conduct an experiment, and then revise their hypothesis to find out which common household liquids dissolve candy corn.
3rd grade
Science
Activity
Helicopter Seeds
Helicopter Seeds
Activity
Helicopter Seeds
Take to the air with science by experimenting with helicopter seeds right in your own backyard!
3rd grade
Science
Activity
Kokedama
Kokedama
Activity
Kokedama
In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."
3rd grade
Science
Activity
Dinosaur Skeleton Hunt
Dinosaur Skeleton Hunt
Activity
Dinosaur Skeleton Hunt
Put your young paleontologist's puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.
3rd grade
Science
Activity
How to Press Flowers
How to Press Flowers
Activity
How to Press Flowers
April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!
3rd grade
Science
Activity
Spinning Color Wheel
Spinning Color Wheel
Activity
Spinning Color Wheel
Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!
3rd grade
Science
Activity

Third Grade Science Activities and Experiments

Our free, hands-on third grade science activities and experiments are the perfect way to empower third graders to learn cool stuff and think critically about the world around them. For more in-depth science projects, take a look at the Science Fair Project Ideas section of the site.