The human knot game is a perfect team-building exercise and a fun activity that's sure to bring lots of laughs along the way.

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

What can you do with hair after its cut? This science project teaches you practical uses for human hair.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea experiments with spinning color wheels and optical illusions.

Your child can explore color mixing and design while folding together a paint-filled paper and then using a marker to outline it.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

In this activity, your child will watch a video about empathy and practice speaking to someone with empathy. They will also discuss how empathy supports living in a community with others.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Explore the world from your own home by conducting research about other cultures with your 4th grade child.

Create a haunted house from upcycled materials in this lively craft project!

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

This science fair project idea explores whether white light can be separated into different colors.

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

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

In this activity, learners will discover how to make a basic water filtration system using common materials found around the house or outside.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea explores whether color affects a person's emotional state.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.