This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

Challenge your learner to design and build a city of their own in this creative engineering activity.

This science fair project idea produces varying pitches of sound.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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

This science fair project idea investigates if fats add to the flavor of food.

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

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

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

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

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.

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.

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

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 investigates the difference in reaction times between boys and girls.

This science fair project idea determines the most effective method of preserving food.

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

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

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.