Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea experiments with spinning color wheels and optical illusions.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project idea provides evidence that air is everywhere and takes up space.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

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

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.