Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

This science fair project idea's objective is to understand the architecture and function of neurons and their key components.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

This science fair project demonstrates the "power of conformity".

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

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

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

The objective of this experiment is to evaluate the effects of acid rain on plants.

This science fair project idea raises awareness of a real ecological issue.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

This science fair project idea produces consumable fresh water from salt water through desalination.

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

Science fair project that determines which foods and drinks contain the highest amount of glucose.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

The project determines which laundry detergent is best for cleaning clothes.

Find out whether a longer airplane will fly farther or a wider paper airplane.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

This science fair project idea measures and compares effects of chemical weathering, specifically carbonation, on different kinds of rocks.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

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

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.