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Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science fair project idea investigates if fats add to the flavor of food.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Make edible amber fossils with your second grader to explore the fascinating world of science!

Start your toy engines -- this is going to be a fast and friction-filled race!

Is it a square or a circle? See if you can trick your friends with this zany science project!

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

In this activity, your child will be challenged to make a tower using paper cups.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.