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Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

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

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

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

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.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Determine whether butterflies like to drink sugar water, salt water, or plain water.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Learn all about balance and motion as your child designs a corn maze!

How well can people recall what they have observed. Test your knowledge in this fun experiment.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Learn whether writing things down really makes things easier to remember.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.