Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

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's objective is to become familiar with items your family regularly throws in the trash.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Challenge your learner to design and build a city of their own in this creative engineering activity.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

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

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

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.

The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.

Take a dive into the candy jar with this yummy science experiment.

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.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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