In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Find out whether putting something on top of a plant will inhibit its growth.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

This science fair project idea investigates whether plants can survive being frozen.

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

In this project, the affects of vitamin E are observed on a rose petal.

Explore if planting seeds in a certain direction will affect how fast it germinates.

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

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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.

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

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

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.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

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

Find out whether a longer airplane will fly farther or a wider paper airplane.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

In this experiment we will be determining whether birds prefer certain colors of seed.