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Challenge your learner to design and build a city of their own in this creative engineering activity.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This science fair project idea examines the reason boats are shaped and engineered.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

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.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

Science fair project that examines condensation and the conditions needed in order for dew to form.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This will encourage your child to utilize their observation skills, develop aesthetic awareness, build artistic drawing abilities and learn about the seasons.

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Create a self-portrait from natural materials in this collage craft activity!

This classic children's game demonstrates how sound travels through air vs. through a solid.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Help your child celebrate the summer and the sun by making a sandy seascape.

Use pepper and soap to discover some fun facts about the properties of water.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!