Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

This science fair project will help students learn about non-vascular plants, such as mosses.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

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

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Take the art making outside: have your first grader make a clay relief sculpture of the natural world. This is a great activity for summer.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

Does your child love learning about dinosaurs? Does he like digging around in search of hidden treasures? In this fun activity he'll do both!

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

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 about this simple machine and make a pulley of your own to use for fun science trials.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.