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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.

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

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.

This project examines whether humans can intuitively grasp numeric values greater than three.

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.

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

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

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

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

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

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

How do crystals form? In this science fair project, students will use three different saturated solutions to see how different minerals form crystals over time.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

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