Before telephones were invented, there was no way for you to sing Happy Birthday to your friend if she wasn’t in the room with you. Now you can call anyone, anywhere in the world! How was the phone invented How has it changed since then Read and find out how a telephone can carry your voice across oceans, and how they have changed the world.
This book is by top Let’s-Read-and-Find-Out author Kathleen Weidner Zoehfeld and contains hands-on activities, including building a string telephone to find out how sound travels!