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.

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

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.

This science fair project idea investigates how the shape of an object affects drag.

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

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.

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

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.

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.

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

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

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.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.