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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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Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water
Third Grade
Physical Science
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.
Third Grade
Nature Activities
Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!
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.
Third Grade
Nature Activities
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!
Third Grade
Life 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.
Third Grade
Physical Science
Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.
Third Grade
Plants, Animals & the Earth
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.
Third Grade
Physical Science
Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!
Third Grade
Physical Science
This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.
Third Grade
Earth & Space Science
Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!
Third Grade
Physical Science
Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.
Third Grade
Physical Science
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.
Third Grade
Physical Science
Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.
Third Grade
Earth & Space Science

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