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.

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.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

In this fun activity, your child will create their very own solar oven to bake s'mores!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

This science fair project idea explores whether talking to a plant will help it grow.

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.

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

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Make a spring collage with your child to get them outside and those creative juices flowing!

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

In this science fair project, students make their own rain gauge to measure rainfall.

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.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

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

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!