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

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

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

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

This science fair project idea explores the egg's thin membrane.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project idea investigates how color affects temperature.

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

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

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

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

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

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

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.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Help your child plant a "tea garden": a garden made of herbs for making teas.

Learn whether writing things down really makes things easier to remember.