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

In this science fair project, students make their own rain gauge to measure rainfall.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

The goal of this project is to create an exciting topographical map out of dough.

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

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

In this science fair project, students use the streak test to tell minerals apart from each other.

In this experiment you will replicate the mummification process by making a hot dog mummy.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Give your budding young observers a chance to discover simple machines at use in their own home.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Examine the effect of pressure on carbonation in soda.

This science fair project idea determines which method of hand cleansing is the most effective.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Create a bee garden to help shelter bees in your area.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.