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

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

In this experiment we will be determining whether birds prefer certain colors of seed.

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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

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

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

The goal of this project is to create an exciting topographical map out of dough.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

In this experiment, the weight of aluminum cans will be compared.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

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.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

This science experiment has students test whether a snail moves faster on concrete or dirt.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

This science fair project idea identifies clouds as a means of predicting the weather.

In this science project, the center of gravity is explored.

Explore if planting seeds in a certain direction will affect how fast it germinates.

This science fair project will help students learn about non-vascular plants, such as mosses.

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