This science fair project idea explores how length affects the weight a bridge can hold.

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

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

First graders are learning to think like scientists. What better place to start, then by raising tadpoles? This hands-on activity explores science in action!

Introduce your child to science with something they see everyday--their shadow!

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!

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

The objective of this science fair project is to investigate salt water density.

This science fair project idea investigates whether air has mass and weight.

This science fair project idea demonstrates that plants give off water.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

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.

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.

This science fair project idea investigates how the shape of an object affects drag.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

This science fair project idea determines which method of hand cleansing is the most effective.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project teaches students about wilting and browning of salad greens.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Help your young learner discover why the insects that a spider eats stick to its web but the spider doesn't.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.