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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.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea investigates if fats add to the flavor of food.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science fair project idea investigates how magnetism can defy the force of gravity.

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.

This science fair project idea examines the reason boats are shaped and engineered.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This science fair project teaches students the differences between fruits and vegetables.

This science fair project idea demonstrates that plants give off water.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.