What's Included: 1 Energy Stick Energy Stick Probes Instructions How Does It Work? The Energy Stickʼs sensing circuit is so sensitive that it can detect even a very small amount of electricity that travels across your skin! Learn about conductivity and different types of circuits. It's completely safe, and it's a totally cool way to learn about conductors of electricity. By adding the probes to the ends of Energy Stick, you have made what electricians call a conductivity tester or a device that determines if something conducts electricity. Test items to determine if they are insulators or conductors Conductor: If a material or a device allows electrons to move through it freely, it's a good conductor of electricity. Metals, like copper and steel, and some liquids, are good conductors. Insulator: Some materials, like rubber, wood, or glass, do not allow electrons to move through them easily. These insulators can be used to allow safe handling of or protection for electrical circuits. What does it teach? By adding the probes to the ends of Energy Stick®, you have made what electricians call a conductivity tester or a device that determines if something conducts electricity. The Energy Stick is a great toy to explore the science of electricity and circuits. The Energy Stick's sensing circuit is so sensitive that it can detect even a very small amount of electricity that travels across your skin! It's completely safe, and it's a totally cool way to learn about conductors of electricity.