An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

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

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

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

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Help your child make a beautiful homemade sandcastle that will last!

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Help your child celebrate the summer and the sun by making a sandy seascape.

In this science fair project you will make a model of a cell membrane using very simple material.

This science fair project idea explores the different properties of matter.

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.

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

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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!

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

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

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!

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

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

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.