Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Add a little sparkle and shine to your Christmas or Easter decorations: make a charming blown egg ornament in this fourth grade arts and crafts activity.

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.

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.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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

How do organic materials become soil? This science experiment measures what materials biodegrade.

This game reinforces the meaning of the term "multiples" and is fast enough to hold the attention of your fourth-grader.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea determines if the color of light affects the growth of plants.

Your fourth grader will love practicing his math facts with this fun computation game.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Let your fourth grader contribute to your 4th of July picnic with this creative caddy craft project.

This science fair project idea investigates how color affects temperature.

Give your fourth grader a lesson in making blankets, and he'll be able to give the gift of warmth. Fleece blankets are especially fun to make, and they're cozy!

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Here's an activity that lets your third grader, fourth grader, or fifth grader bring the warmth and light of lanterns into your home by making his own.

Create a fun hands-on game to practice long division, using magnetic numbers on a fridge.

Here's an activity to teach your fourth grader how to reflect on her past year and set specific, attainable goals to reach in the New Year.

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

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

Show your fourth grader how to make a delicate, dried flower bookmark with flowers native to their neighborhood.

In this project, the affects of vitamin E are observed on a rose petal.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!