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Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.

Science fair project that explore how compound motion works by examining how gravity is affected by horizontal force.

This fun elementary school science fair project idea helps students in designing an amusement park using their knowledge of forces and simple machines.

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

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

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!

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

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.

This project explores how well couples convey complex emotions such as envy and pride to one another solely through the sense of touch.

Get this cool middle school science fair project idea on how to conduct a flame test to detect the presence of certain metals in chemical compounds.

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.

Measure the effectiveness of detergent containing a UV-absorbing compound in blocking UV-A radiation. Use black light and UV detecting beads.

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

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

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

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

In this project, you will observe and record changes in sunspots over two weeks.

This science fair project idea attempts to train a worm to complete a simple maze in order to find out if worms can learn and remember.

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

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

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

This science fair project idea focuses on two classes of sugars monosaccharides (fructose) and disaccharides (sucrose or table sugar).

Research and understand basic computer science. Build a simple computer, following instructions found online. Design a new or improved feature.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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