The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

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

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

Make sourdough bread...and learn some colonial history and modern science in the process!

This science experiment tests if dog saliva can really help heal wounds.

This year on Mother's Day, try this gift project that brings together an appreciation for gardening with a hands-on lesson in art history.