This science fair project idea determines which flower lasts the longest.

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Science fair project that uses distillation to convert salt water into fresh water.

This project analyzes people's emotional responses to images in painting vs similar images in photographs.

Here's a science activity to help your child investigate how seeds are designed to travel.

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

Science fair project which examines the chemical reaction of a candle flame with various gases in order to determine the identity of the gas.

This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

The project researches how lubricants affect the mechanical advantage of a pulley.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

Science fair project that demonstrates the principle of conservation of mass by conducting a chemical reaction inside a sealed Ziploc bag.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

The goal of this science fair project is to demonstrate magnetic forces of attraction and repulsion using a magnet and everyday objects.

This science fair project idea explores if an LED light can be powered by vegetables and/or fruits.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Construct and experiment with a periscope using reflected light rays to gather an image.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

This project explores how well couples convey complex emotions such as envy and pride to one another solely through the sense of touch.

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Science fair project that determines how your mirror image differs from your actual image and how virtual images are constructed.