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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.

Give your budding young observers a chance to discover simple machines at use in their own home.

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.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

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.

Discover the wonders of simple clay by pressing flowers into a modeling medium!

Kids conduct a simple science experiment to see if seeds can grow without soil in this simple kindergarten science activity.

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

This simple experiment serves as an introduction to the greenhouse effect.

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

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.

Show your child how to concoct a simple duo of household ingredients that changes color as acids and bases are added!

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.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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