Plastic cup phones...an oldie but a goodie! I had originally made them with small metal soup cans, but they didn't work at all! When I asked my awesome FB followers if they had tried making them and what results they had, everyone suggested plastic cups instead. They were right! Plastic cups worked great! These are so easy and quick to make. We had fun playing spys and secret agents :) How To I pushed a nail into the bottom of two plastic cups, threaded some yarn through and tied a knot…

String Telephone Explanation: How Sound Waves Travel - Making a cup and string telephone is a classic kids' activity. Make it a little more scientific with this string telephone explanation!

The classic DIY string telephone with cups is easy to make at home and your kids will have lots of fun talking to each other "long-distance"!

Some of the science experiments for kids include static bulbs, bouncing egg, homemade rainbow, invisible ink, jumping coins, glowing water, homemade rock

Paper cup phones work by transmitting sound vibrations over a tightly-pulled string. The bottom of the cup is a simple microphone and speaker.

Do you remember making these as a child??? Talk about some girl scout camp nostalgia! I love this activity because it is fun for all ages! Young children

Do you remember how to make a paper cup phone? Does yarn work for cup phones? Teach your child how to make a string phone with cups and test how far it works.

How to make a paper cup phone -- fun kids science experiment!

Do you remember making these as a child??? Talk about some girl scout camp nostalgia! I love this activity because it is fun for all ages! Young children

< View all projects Grade Level: First Grade Book: Physical Science Unit: Energy Module: Sound Energy Objective: Use a classic children’s game to demonstrate the ability of sound to travel throu