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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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How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.
Fourth Grade
Physical Science
Get those mad scientist goggles ready! This group of crazy concoctions will cover all the science basics, with style. Explore candy science, soap science and more... Suddenly science never looked so cool!
Second Grade
Physical Science
Your child will be hooked on chemistry after she builds a model volcano by combining an acid and an alkaline substance.
Fourth Grade
Physical Science
Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!
Second Grade
Physical Science
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 fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.
Fourth Grade
Physical Science
Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.
Second Grade
Life Science
Try this experiment to give your curious kid a more 'solid' understanding of how temperature affects the states of matter.
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
Put your second grade scientist to work this Fourth of July with our colorful 'liquid fireworks' project!
Second 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
Add some fun to arts and crafts by having your child make a self portrait using nature as her palette.
Second 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
Amaze your kids by separating a salt and pepper mixture using an 'electric spoon' charged with wool.
Fourth Grade
Physical Science
Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.
Second Grade
Plants, Animals & the Earth

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