Harnessing Electricity To Communicate

Harnessing Electricity To Communicate


Hello from Redmond. The Education Workshop’s been thinking a lot about electricity
and the vital role it has played in the changing world of communications. We are excited to present a collection of hands-on activities that will guide your
students from the invention of the electrical circuit to the development of
the Telegraph. The lesson plan begins with an introduction to electrical
circuits. Students build LED signal lamp and practice sending coded characters
using Samuel Morris’s well-known 1844 technique Morse code. Then, working in
groups students record their observations in a student journal and
reflect upon the impact that electrical circuits have had on how we communicate
today. Next, students use their completed circuit to construct a battery-powered
electromagnet to see firsthand the important scientific relationship
between electricity and magnetism. Then, they run trials to test the strength of their electromagnet by picking up paper clips. Bringing all these early scientific concepts together, students combine their understanding of circuits
and electromagnetism to build a plastic cup speaker. They then assemble an
analog telegraph to communicate in Morse code by integrating the circuit
and the speaker and then finally students add an Arduino Uno to their
Telegraph which then enables them to send messages in Morse code. These
messages can be encoded and decoded in real time in a customized Excel workbook
enabling them to experience the original invention with a modern twist. The
integration and sequence of these projects supports teaching how
scientific discoveries build upon each other leading to new innovations. So I
hope you’ll check out this amazing collection of materials, download our
worksheets and try out our activities and please hack our projects. We’ll talk
to you soon.

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