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

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

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

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.

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

Cleaning can be a chore, but not with this sudsy experiment!

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.