The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Help your child to make a beautiful Africa mask to help her reinforce important spatial and compositional skills.

Help your 4th grade child work on understanding place values of digits in decimal numbers with this fun activity.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

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

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

This is a simple, fast game that you and your child can make together to help him master rounding with decimals.

Air-drying clay gives your young artist the opportunity to make a simple bowl that mimics the beauty of an autumn leaf.

Send your child on an online hunt where he will practice working with search engines and use his reading comprehension skills to find specific information.

To help your child shake the big number blues, here's a handy strategy to make your child a place value pro!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This spider mobile activity encourages learning about the science of motion, air currents and art.

Pine cone centerpieces make for a festive and natural holiday decoration. Make a pine cone centerpiece to display on your table or mantelpiece.

Try your hand at writing jump rope rhymes by organizing your ideas first, then composing your creation like a poem.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea explores the different properties & interactions of sugar molecules.

Encourage your child to take ownership of a plant by creating a care plan and following it over the course of a couple of weeks.

Popcorn pops get a Valentine's Day twist with pink popcorn and a red candy center. Make popcorn pops as a special treat for Valentine's Day or any day.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn whether writing things down really makes things easier to remember.

What better way to care for the earth than to create a Call to Action plan for the entire family?

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

In this activity, your child will get a review of addition, subtraction, multiplication and division using classic domino pieces.

Create a yarn doll out of a few toothpicks and colorful string with this Guatemalan craft.

Valentine cookies are a classroom staple on Valentine's Day. Make a batch of delicious valentine cookies with your child this February.

Explore the world from your own home by conducting research about other cultures with your 4th grade child.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.