Learn about vibration and how sound travels when you make your own cup and string phone! With just two empty KRAFT Easy Mac Microwavable Cups and a few feet of string, you can create a cup and string phone that really works.
What you need
2 empty KRAFT Easy Mac Microwavable Cups
String (3 feet or more)
Wash and dry 2 empty KRAFT Easy Mac Cups.
Ask a parent to help you poke or drill 1 hole in the bottom of each KRAFT Easy Mac Cup.
Thread the string through both holes and tie a couple knots so the string is secure.
Pull the string tight and start chatting through your phone!