Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

Determine how different measurements of the same object might yield different values. Provide as many reasons that you can think of.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Look for correlation between pH values of commercial soaps and detergents and manufacturer claims about eye irritation hazards.

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

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

This project researches whether the type of land use affects the water quality of Queenstown Creek.

Is your child a young ornithologist in the making?

This experiment investigates whether font choice affects peoplesâ ability to remember the information that they read.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This project examines whether humans can intuitively grasp numeric values greater than three.

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

This fall, make a leaf crown that will encourage creative play and your child's interest in the natural world while you help them build fine motor skills.

Store bowls of fresh fruit in differently lighted environments. Contrast freshness based on appearance.

Bring the magic and mystery of the night sky to the light of day with this fun constellation art project!

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Trick your eye with this easy-to-make animation flip book! It's a fun way to learn about persistence of vision and is creative enough to entertain anyone.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

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

Teach your child the meaning of recycle and reuse by repurposing plastic spoons as plant markers for your vegetable garden.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

Introduce your child to science with something they see everyday--their shadow!

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.