String Machine: Physics & Mechanics Science Activity | Exploratorium Teacher Institute Project

Waves are everywhere. They break on the shore of the ocean, bring music to your ears, and carry the signal of your favorite radio station. By attaching a string to two small electric motors rotating in the same direction, you can create and play with a special class of waves called standing waves.
waves sound mechanics vibrations sounds electric Wave motor vibrate motors
A set of 40 digital numeracy idea cards with quick, creative prompts in shapes, number sense, and basic operations to help elementary teachers easily refresh math routines and boost student engagement.
Teacher Finds
Smart audio glasses with built-in Alexa for hands-free calls, music, and notifications.
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