This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This project examines what types of objects burn and which burn faster and cleaner.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

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

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

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

Construct batteries that make electricity from fruits with this fun science fair project.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Find out whether matte or shiny nail polish lasts longer.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

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.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

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.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

The purpose of this science fair project is to build a basic radio.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

This science fair project teaches students about wilting and browning of salad greens.