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What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Science fair project that determines whether mass and weight are the same or different.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Examine the effect of pressure on carbonation in soda.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

This science fair project idea explores substances that cause a bubble to last longer.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

This science fair project idea investigates how color affects temperature.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This science project has students study a group of volunteer liars actively lying to study the behavior of a lie. Students see if they can figure out the truth.

Find out whether matte or shiny nail polish lasts longer.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Construct batteries that make electricity from fruits with this fun science fair project.