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How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

This project explores ways to prevent static electrical shocks.

Science fair project that demonstrates that rotting food attracts insects that lay eggs on it.

How do cold packs work? Explore endothermic reactions by comparing the temperature change that results from various chemicals added to water to find out!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

This experiment determines the distribution of darts around a bulls eye to simulate the probability of an electron's location in its own cloud of electrons.

This project determines how much the rebound rates of tennis balls change after ten games.

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!

In honor of Black History Month, this activity encourages your child to focus on African American inventors, and do a little inventing of his own.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

The scientific purpose of this experiment is to investigate which material is the best packaging for fragile items during shipping.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

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

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

Do human lie detectors exist? Charge up your powers of observation to see if you can tell a lie from the truth.

This science fair project examines how carnivorous plants digest insects, and whether the plant can use nitrogen in the soil to compensate for lack of insects.

This science fair project idea determines the most effective method of preserving food.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

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

The objective of this science project is to determine the length of time for different seeds to germinate.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

Use old coffee cans and socks to make a beanbag toss game for kids in preschool and kindergarten. This activity is great for math and coordination.

Science fair project that tests the effects of diluted soap on the size of bubbles blown from the solution. Will dilution cause smaller bubbles?

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This experiment explores whether caffeine improves athletic performance.

We're all familiar with the idea that some songs âget stuck in your head.â This experiment explores the validity of that claim.