This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

Determine if gender affects the ability to identify different smells.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Make sourdough bread...and learn some colonial history and modern science in the process!

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea examines which type of insulation holds in the most heat.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

An home science experiment for older students that teaches about the science behind heat.

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

This science fair project idea investigates how magnetism can defy the force of gravity.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Glass is see-through, but usually you can still see that it is there. In this experiment, we use baby oil to make glass go completely invisible.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.