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Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Making your own glass cleaner is easy, effective and inexpensive!

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

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

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