The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

The objective of this experiment is to identify common materials that absorb sound waves with the greatest efficiency.

This science fair project studies whether DSLR and Point-and-Shoot cameras work the same way under all conditions.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Who knew that nature could get so crafty? Show your kindergartener how to collect and morph pinecones into a whole team of personalized pinecone people.

.Have you ever had problems with your wifi signal strength? In this experiment you will learn about how wireless signals pass through the air and solid objects.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

The goal of this science fair project is to demonstrate the effects of oxidation by writing a message in invisible ink made from lemon juice.

This project examines the phenomenon of using a mirror to trick a person's brain into experiencing sensations in body parts not actually affected.

Ignite your kindergartener's love of adventure and learning with an imaginary trip under the sea.

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

Design a more versatile real estate website. Contact realtors and real estate websites for advice and further information. modify an existing design

This project investigates whether chewing gum can help a majority of people with focus and concentration.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Celebrate April showers with a springtime arts and crafts activity: make sparkly, shiny raindrops with your kid.

Science fair project that illustrates the properties of black holes in space.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Discover which battery composition (type) lasts the longest.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

Create a self-portrait from natural materials in this collage craft activity!