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What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

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.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

In this science fair project you will make a model of a cell membrane using very simple material.

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

This project compares the strength of one, two, and three-ply toilet paper.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Find out whether a longer airplane will fly farther or a wider paper airplane.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this project students experiment with making music using only glasses of water.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.