This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Your preschooler will engage their senses by making a scented pumpkin to decorate your house.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

This experiment will explore the possibility of creating an infinite object by hand.

Science fair project that studies how the brain transforms man-made symbols into meaningful concepts.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Study the physical and chemical changes that make hair curl or straighten. Study ingredients, function of chemicals like thioglycolic acid.

Determine if each hemisphere specializes in dealing with specific functions. Include illustrations of the brain, it hemispheres.

Test for a correlation between perceived color and heart rate. Using a stethoscope and stop watch, measure the heart rate (beats per minute) of volunteers.

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

Test the effects of left and right handedness on writing speed and penmanship. Volunteers hand-copy the same paragraph of text, which samples look neater?

Research history of programming language. Design a new or improved programming language. Create a display that illustrates the features and improvements.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

Study the effect of music on blood pressure. Compare blood pressure readings before and after the listening session. Analyze results, write a detailed report.

In this science fair experiment about recycling, demonstrate how the wax from a candle can be reused to make another candle.

Devise an argument for or against the possibility of resurrectin extinct species through DNA manipulation. Analyze data, report findings.

Describe the lives of commercially raised chickens. Contact local chicken farmers for information and advice. Write a detailed report about farming techniques.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

This experiment examines if space objects become round after reaching a certain mass.

This experiment will explore if and where fractals can be found in the natural world.

Experiment with fermenting various fruits, grains or syrups. Describe and illustrate the fermentation process in a detailed report.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Build basic projector out of ordinary materials. Create several color transparency slides, demonstrate your creation.

Research camouflage products and techniques, test quality by timing volunteers. Calculate the average length of time to recognize the subject.

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

Research overview of architecural acoustics. Design and build a whispering wall from wood or plastic. Test which materials work best.

Research fruits and their ripening stages, follow and document the different stages. Analyze what causes fruit to continue ripening after being picked.

Determine the effect of homework on academic performance. Collect grade info at the end of a semester, determine correlation between grades, amount of homework

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.