This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Boiling water in a paper cup is possible because of convection and the thermal properties of water and paper. Learn how with this fun science fair project idea.

The objective of this science fair project is to assess the benefits of the game system for improving player performance following use.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

The objective of this free science fair project is to examine the way in which the phases of the moon affect circadian patterns in mammals.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

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.

Magnets may hold up papers on the fridge, but is it the paper that attracts them? Find out more with this kindergarten science investigation.

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

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.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

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

This science fair project idea focuses on the production of oxygen by plants during the photosynthesis process.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

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.

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

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

Check out this fun science project idea to get a better understanding of unstable isotopes and the process of radioactive decay of isotopes through modeling.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

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

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.