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Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

A science scavenger hunt can be a fun way to learn about science. Test your child's knowledge of scientific terms with this science scavenger hunt.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

Check out this cool science fair project idea to explore various aspects of projectile motions like mass, angle and distance.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Your child grows a green thumb and flowers with this seed planting activity that also celebrates the 100th day of school!

This easy at-home experiment is a great way to "see" science.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Introduce your child to the amazing, almost magical phenomenon of static electricity!

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.

Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

Help your kindergarten scientist predict and observe as she explores the science of smell...and have a great time doing it, too.

This experiment evaluates if people of a specific gender or age more likely have an elevated number of taste buds, allowing them to taste what others cannot.

This project will explore whether music influences physical endurance.

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

This science fair project idea explores whether color affects a person's emotional state.

Compare ability of selected materials to block UV-A radiation. Shine black light though glass at detecting beads underneath. Note color intensity.