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.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

The project researches how lubricants affect the mechanical advantage of a pulley.

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

Your child will have fun creating an Earth Day Plate that he can eat off as often as he likes!

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.

Celebrate Earth Day by making a poster that encourages people not to litter.

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

The Earth is always providing in so many ways! In this activity, children reflect on how the Earth gives and on their love for the Earth through discussion and letter writing.

Children will reflect on the importance of performing acts of kindness for the Earth, hear a story about easy ways they can care for the Earth, and set goals to conserve more in their everyday lives.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

Calculate the mass of the Earth using the sidereal and calendar period of the Moon and Newton's Law of Universal Gravitation in this physics science project!

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!

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

What better way to raise awareness about the environment than with an eco-friendly Earth-themed party? Get your party started with this step-by-step guide.

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

This exploration of different types of energy will help young minds appreciate and observe thermal, kinetic, mechanical, and other forms of energy.

Measure the speed of the earth's rotation using protractors and meter sticks. This science fair project measures the angle of the sun in relation to earth.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

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.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

In this inspiring activity, children create and perform their very own Reader’s Theater about helping the planet!

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

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.