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Third Grade Science Activities and Experiments

Browse through our Third Grade science activities & experiments. We have many Third Grade science activities to keep your student learning on the fly, all year long. For more in depth science projects, take a look at the Science Fair Project Ideas section of the site.

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This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.
What Doesn't Belong? A Categorization Game
Third Grade
Life Science
This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.
Make Spider Web Art!
Third Grade
Life Science
This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.
Backyard Archeology
Third Grade
Earth & Space Science
Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.
Easter Egg Designs
Third Grade
Nature Activities
Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water
Make a Water Magnifier!
Third Grade
Physical Science
What causes sound? Hereâs a quick and easy science experiment that helps to add a visual element to the science of sound.
See the Science of Sound
Third Grade
Physical Science
In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.
Make Gak: Experiment with Polymers
Third Grade
Physical Science
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!
Outdoor Activities for Kids
Third Grade
Life Science
Duplication is a great outdoors game that helps your child's memory and teaches him all about his natural environment.
Play Duplication: Nature Memory
Third Grade
Nature Activities
Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.
Design a Great Glass Xylophone!
Third Grade
Physical Science
This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.
Wildlife Habitat Certification
Third Grade
Life Science
Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!
Alfalfa Friends
Third Grade
Life Science
In this activity, your child will learn about a style of gardening that uses moss, also called 'kokedama.'
Kokedama
Third Grade
Nature Activities
This homemade barometer allows your third grade scientist to contemplate and compare different air and weather conditions.
Build Your Own Barometer
Third Grade
Physical Science
Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!
Make a Handwriting Analysis!
Third Grade
Physical Science

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