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.

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 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.

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.

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

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...

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

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

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

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea investigates the difference in reaction times between boys and girls.

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.

An home science experiment for older students that teaches about the science behind heat.

This science fair project idea investigates if fats add to the flavor of food.

This science project idea examines the effect of microwaving on various objects.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.