Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

This science fair project idea explores which fruit molds the fastest.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Take advantage of the fact that ink and water don't mix and introduce your kid to suminagashi, a Japanese form of art.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

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.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.