This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

In this challenge, students are tasked with creating a car that can be powered by a balloon!

Test whether spot magnets can help improve the symptoms of an injury.

Do you hate to waste energy? In this experiment, you will design a machine that is powered by the process known as energy transformation.

People have favorite flavors, but what about ants? Which ant food is the most popular?

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.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Science fair project idea that compares number and relative sizes of leaf stomata. Collect leaves of plant species, identify, observe stomata with microscope.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Does "short circuit" mean that electricity takes a short course? This science experiment provides steps to help you get to the bottom of this science mystery.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

This science fair project idea investigates whether rocks containing geodes can be determined from the outside.

This science fair project idea determines the probability of a coin landing heads or tails.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

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

The aim of this science fair project is to examine the differences between brands of bottled water and analyze consumer preferences through a taste test.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

Explore the wave-particle duality of light! Learn how light can behave as both a wave and a particle in this cool physics science fair project idea for kids.

This science project challenges students to study the salt content in tap water and learn about electrochemistry.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea.

This project examines whether playing music during class helps students learn or if it distracts students from learning.

In this science fair project on the relationship between distance and time, kids explore the behavior of gravitational acceleration through direct observation.