Objective Students learn about a different method of communication.
Directions Telegraphy Guglielmo Marconi invented wireless telegraphy in the late 1800s, but it was in 1901 that he was able to send radio signals through the air over great distances. Marconi had studied sound waves for many years. The messages that Marconi sent were in Morse code, a method of communication using dots and dashes or short and long clicking sounds which represent letters of the alphabet. Communication Web Ask your students to think about the ways people communicate today. Draw lines radiating from the circle and at the end of each line, write a different form of communication we use in daily life, such as the telephone, the television, the radio, letters, newspapers, and magazines.