Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

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

Here's a simple science activity that will help your child better understand how wells bring us water.

This science fair project idea discovers the effect of (high) heat on animal cells.

Determine whether people can actually taste the difference between âhealthyâ cookies and the traditional version.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This science fair project idea determines what household items are good conductors of electricity.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

This project examines various algorithms to determine the ideal algorithm for a strategy game.

This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Check out this fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

Kids learn how fiber optics work with a dramatic total internal reflection experiment using a fish tank, water, and a laser pointer.

Evaluate the ability of a biodegradable dish detergent to increase the penetration of water in hydrophobic soils.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

Think about the adaptive utility of an important aspect of our physiology.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

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