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

Help your child learn about animal classification with this fun and delicious activity.

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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!

How well can people recall what they have observed. Test your knowledge in this fun experiment.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.