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.

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

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

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

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

This science fair project idea determines the most effective method of preserving food.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Spider cupcakes are creepy-crawly treats that are perfect for Halloween. These spider cupcakes make for a great Halloween party treat.

This prime number game is the perfect way to get to know prime numbers. Deal the cards and flip them over. When players a prime number they call out, "Prime!"

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

This school year, have your child decorate his very own clip board and watch him do his homework in style!

Analyze this simple betting game with your fourth grade student in order to discuss probability.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This science fair project idea determines which method of hand cleansing is the most effective.

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.

For kids who prefer to do homework flopped on a rug, this practical caddy can make all the difference!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Help your kids map the "global footprint" of your family's grocery cart by investigating how far your food travels before landing on your dinner table.

Here's a fun way for your child to exercise his writing chops...and prove a point! A great way to practice persuasive writing.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

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.

Children will reflect on the importance of performing acts of kindness for the Earth, hear a story about easy ways they can care for the Earth, and set goals to conserve more in their everyday lives.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.