In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot initiate a domino effect.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

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

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

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this challenge, students are tasked with creating an insulated cup that will keep beverages colder for longer than a regular cup.

This science fair project idea outlines the principles and techniques behind paper batteries.

This science fair project idea examines various dead zones and investigates the cause and how it can be fixed.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

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

This science fair project idea looks into the concept of powered parachutes as the future of transportation.

How does mold grow? Kids find out by testing different conditions to measure mold growth rate and learn about what factors cause mold to grow more quickly.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

Science fair project idea that measures fuel efficiency in cars. Calculate cost per mile by comparing fuel cost and consumption data.

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

In this challenge, students are tasked with creating a car that can be powered by a balloon!

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Make thinking about college fun by working with your teen to design and plan a Road to College board game.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.