Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Can cells be frozen? This science fair project provides information to answer this question.

Science fair project that helps visualize how the human brain functions by constructing a model of a brain.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Design a livable building that functions without electricity. Consider necessities, comforts and entertainment. Build a scale model of your design.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

Research Earthship buildings. Draft a unique architectural design that repurposes used, discarded radial tires. Build scale model of structure.

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 examines various dead zones and investigates the cause and how it can be fixed.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

Create a colorful, informative display that illustrates the properties of blood cells. Prepare slides using samples of fresh raw beef or chicken bone marrow.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

In this cool elementary school science fair project idea make a model to learn what happens to the Earth's surface when ice moves over land.

In this wind tunnel experiment, you'll make a wind tunnel to test lift and airflow on a model plane and explore aerodynamics and the Bernoulli Principle.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

Science fair project that models the subterranean movement of water, using Darcy's Law. How can this information be used in hazardous material spills?

This science fair project idea discovers the effect of (high) heat on animal cells.

Discover the wonders of simple clay by pressing flowers into a modeling medium!

Discover whether eating certain foods will make you smell (not only bad breath) but through skin cells.

This science fair project idea models industrial oil spills and determines if they have an impact on wildlife living beneath the surface of the water.