Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

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

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

In this activity your child will make a coiling snake out of simple household materials, and also find out why they coil.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.