Tuesday, September 29, 2009

Project Plastic Cup: String Telephone


What better way to teach kids about science than by doing it during playtime? Here's one fun and easy way to teach the young ones about sound waves and how they travel. This project requires adult supervision.

Presenting Project Plastic Cup: String Telephone!

For this little project, all you need are some durable plastic cups, string, and scissors. String telephones are usually made of tin cans but plastic cups are just as effective. Both tin cans and plastic cups can handle wear and tear. One advantage of plastic cups is that they are easier to handle. If you are feeling a little artsy, you can always go for the specially designed plastic cups.

1. Punch a hole at the bottom of each plastic cup. Since it is made of plastic, you may use a push pin or any sharp point. The holes should be big enough for the string to fit through.
2. Push the string through the holes of both plastic cups. This may be tricky so use the end of a paper clip to thread it through.
3. Tie a knot in the string. Pull it tight so the knot rests firmly at the bottom of your plastic cup. If the knot won't do it, tie it around a toothpick and use that as your anchor. Do the same thing with the string on the other plastic cup. Remember to pull it tight, but not too tight.
4. See if it works. Have your partner speak while you listen with your side of the telephone. You should be able to hear your partner's voice, even if you    used a long piece of string between the plastic cups.

These days, you don't have to immediately send used plastic cups to the trash bin. There are a myriad ways to reduce, reuse, recycle and like the string telephone project, have fun and learn at the same time. With Eco-friendly plastic cups like CupDepot.com's, your plastic cups will surely go a long way.

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