Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project idea examines the reason boats are shaped and engineered.

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!

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this project, different brands of microwave popcorn are tested and compared.

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.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This science fair project idea investigates the difference in reaction times between boys and girls.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

In this design challenge, your child will make a bottle rocket using typical household items.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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