Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

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

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

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

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea examines which type of insulation holds in the most heat.

In this fun activity, your child will create their very own solar oven to bake s'mores!

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

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science experiment tests if dog saliva can really help heal wounds.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This science fair project investigates why the number of visible stars changes from place to place.

In this activity your child will create their very own marble maze!

This science fair project idea produces sounds by creating vibrations using different objects.

In this design challenge, your child will create a parachute for a small toy using typical household items.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

This science fair project examines how seeds hitchhike on animals and clothing.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

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