Curated OER
The Invention of the Telegraph
Students study the history of telegraph invention. In this technology lesson, students build their own Morse Telegraph System. They discuss how this invention benefits the society.
Curated OER
Creating a Simple Telegraph Machine
Students experiment and discuss circuits and how they work. For this science lesson, students construct a telegraph machine using cardboard, wires, battery, electric tape and masking tape. They investigate what happens as the circuits...