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Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Cleaning can be a chore, but not with this sudsy experiment!

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

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

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

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.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Science fair project that determines whether mass and weight are the same or different.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

This experiment tests which gender is better at catching how a magician performs his tricks.