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.

Parents can help their children at home by using a dialogue journal to model good writing.

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.