Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

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

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.

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.

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

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

In this activity your child will create their very own marble maze!

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Engineers in training can get started with this simple wheel-and-axle construction activity.

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

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.