.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

Discover which battery composition (type) lasts the longest.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Discover which fabrics shrink the most in the wash and why.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

Does 100% Fruit Juice have more Vitamin C than juice with artificial ingredients? Find out in this science fair project idea!

The objective of this experiment is to conduct a ganzfeld experiment and determine if extrasensory perception (ESP) can be observed.

Examine the presence of seeds in open fields. Collect seeds on socks by walking through open fields of grass or other growth. Germinate seeds on socks

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

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

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

This science fair project explores discover whether the acidity of sour candy is comparable to that of battery acid.

Show your middle schooler how a quick whirl of spinach in the blender will reveal the cobwebby "stuff"--or DNA--of life!

This science fair project idea creates an underwater habitat and explores the basic needs of living things under water.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

Learn whether dark green and leafy veggies tend to have a higher Vitamin C content than lighter green varieties.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

This science fair project ideaexplores whether cooking food destroys potential vitamin levels.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea examines if there is a reason that musical notes are at the pitches they are.

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

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

Sure, you already know that water is made up of hydrogen and oxygen, but did you know that oxygen levels differ in different types of water?

Use a microscope in this experiment to learn about different kinds of "good bacteria" that turn milk into yogurt!

This biodiversity project examines the biodiversity in your own backyard.