String Telephones - Activity - TeachEngineering
Salt Vibrations: Sounds You Can SEE! - Frugal Fun For Boys and Girls
Vibration & Sound: Make Sprinkles Dance
Vibration, Sound Waves, and STEM Project - Cool School Comics
Magic of Sound Engineering: Easy Amplifier Made From Cups - KidMinds
String Telephone Explanation: How Sound Waves Travel - Raising
Yogurt Cup Speakers - Activity - TeachEngineering
DIY iPhone speaker to learn about sound
Sound activity cup phone
Soda Bottle Speaker