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Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

A cool physics science fair project idea for 7th grade exploring the application of distance, velocity, and time equations.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

Summer is a great time to work on pre-kindergarten skills that will serve your child well in her first year at school, while having some fun in the sun!

Science fair project that evaluates how well clothing fabrics block UV radiation by examining the properties of different fabrics.

More height, more steep, more speed! This science project investigates whether there is a correlation between the height of the roller coaster and the slope.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Here's a simple science activity that will help your child better understand how wells bring us water.

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

In this game, players will learn interesting facts about animal adaption and practice them using a fun matching card game!

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

Use a dichotomous key to identify plants or animals.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

What better way to celebrate spring than with a fabulous flower party? Pack the day with fun flower activities and treats for a truly springalicious event!

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

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

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.