4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Test whether plants can grow without sunlight and water.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Demonstrate how to tell the age of an egg without having to crack it open.

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.

This science fair project idea provides evidence that air is everywhere and takes up space.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

In this project children practice the scientific method while playing with puffy paint.

Discover which fabrics shrink the most in the wash and why.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

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

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea explores how length affects the weight a bridge can hold.