Materials
Variety of telephones (cordless, rotary, speaker phone, push button)
Instructions
1. Show children as many different types of phones as possible. Ask the children if any of thephones resemble a phone they have at home.
2. Discuss how the phones are similar and how they are different.
3. Place the phones in a play center for children to explore.More to doMore science: Make "can" telephones and discuss how sound travels through the strings.