This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

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

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Help your first grader design and create his very own bird feeder out of an empty milk carton.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Give some of your local ladybugs a warm place to stay for the winter by making a ladybug home with recycled materials.

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.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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

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!

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

This classic children's game demonstrates how sound travels through air vs. through a solid.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

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

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

Water can go from solid to liquid to gas...but how does popcorn go from kernel to snack? Invite your first grade scientist to find out.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

Here's a great early reading and science activity for curious children. Learn how to plant your child's name in seeds for a growing writing activity!

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.