The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

The purpose of this science fair project is to learn which substance best preserves apples. Learn about enzyme interactions in fruit and scientific processes.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

In this cool psychology experiment, study how companies air commercials to strategically advertise to viewers who will buy their products.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

This optics-based science fair project idea teaches kids about real and virtual images with a mind-bending candle illusion inspired by Pepper's Ghost.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Science fair project that examines learn how the angle of incidence affects the efficiency of solar panels. How does a solar cell work?

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

The objective of this science project is to determine whether the brain first processes colors, shapes, or words when given conflicting messages.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.

This experiment determines the distribution of darts around a bulls eye to simulate the probability of an electron's location in its own cloud of electrons.

Discover which method for odor removal words the best for stifling refrigerator odors.

In this science fair project, young children notice and track changes in trees throughout the year.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This experiment evaluates whether frequent texters have better finger dexterity compared to people that rarely use text messaging.

This science fair project idea designs safe bicycle routes using GPS.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

In this fun experiment, we'll find out how color affects heat absorption!

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

This experiment investigates if stress alters body temperature.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea examines the differences between bottle water, filtered water, and tap water.

Demonstrate if cooking destroys all bacteria that is present in raw meats such as salmonella.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

This science fair project investigates what type of cookie sheet bakes the best cookies.