Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

This project explores how well couples convey complex emotions such as envy and pride to one another solely through the sense of touch.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

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

This experiment evaluates if personality affects the type of movies that people prefer.

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

This experiment investigates whether the primacy effect is observed more frequently in specific populations of people.

This science project allows students to study the psychology of happiness.

In this science fair project, students investigate the applicability of Benford's Law to many sets of everyday data.

The objective of this science fair project is to determine whether there are gender differences when boys and girls view optical illusions.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Follow in the footsteps of movie character legends as you walk your little one through the steps of becoming a junior archaeologist.

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

This project explores whether similar type movie scenes are accompanied by music with similar characteristics.

This project compares test subjects' responses to whining and other "attachment" and attention-getting sounds to determine which sounds are most distracting.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

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!

The goal of this science fair project is to demonstrate magnetic forces of attraction and repulsion using a magnet and everyday objects.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.