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Second Grade and Fourth Grade Science Activities and Experiments

Science activities help little learners of all ages understand important concepts, and these science activities for kids give them the opportunity to discover something completely new. What's more, science activities are fun! Some, like Oobleck, are messy. Others are impressive, like the classic erupting volcano project. Whatever activity you end up trying, your child will be developing new skills as he forms predictions and makes observations. No matter where your child's interests may lie, we have a science experiment that will teach him something cool and make him smile.

For more in-depth experiments and investigations, check out our Science Fair Project Ideas section of the site.

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Magic, science, or household cleanser?  Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.
Second Grade
Physical Science
Take a look at forensic science with your child. She'll learn how to take a shoe impression, just like the detectives do!
Fourth Grade
Physical Science
Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.
Fourth Grade
Earth & Space Science
Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!
Second Grade
Physical Science
Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!
Second Grade
Life Science
This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.
Second Grade
Plants, Animals & the Earth
Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!
Fourth Grade
Physical Science
Here's a hands-on experiment that will teach displacement and show how an object's shape affects its buoyancy, while playing with clay and water!
Fourth Grade
Physical Science
Help your child understand the scientific concept of evaporation with this fun outdoor science activity.
Second Grade
Physical Science
Air invisible; it doesn't make sounds; you can't pick it up and throw it.  So how do we know it exists?  Help your second grade scientist figure it out.
Second Grade
Physical Science
Try this chemistry experiment with your fourth grader and get some 'shocking' results!
Fourth Grade
Physical Science
Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.
Fourth Grade
Physical Science
Help your child plant a âtea garden': a garden made of herbs for making teas.
Fourth Grade
Nature Activities
This simple 'how to make a water wheel' activity makes physics come alive for your child by demonstrating how different kinds of energy work.
Fourth Grade
Physical Science

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