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.

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.

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.

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

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

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

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

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

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This science fair project idea examines whether boys and girls differ in reflexes.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

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