Using the principle of codes, particularly Morse code and the story of changing telephone numbers, this project illustrates many numerical principles.
Worksheet 1Codes
What are codes?
Changing information from one type to another is known as encoding (or putting it into code). You can encode a message as Semaphore using flags. In a way, the human voice is encoded before we speak because the air we use changes as it passes through our vocal cords.
Worksheet 2Telephone numbers
Morse code
Before the telephone was invented, the telegraph was used to send messages over long distances. Early telegraphs could only send pulses of electricity along a wire, not actual messages. In 1840, Samuel Morse and Alfred Vail invented a code to translate these pulses into letters and numbers, called Morse code. For example, in Morse code, the letter A is represented by a short then a long pulse of electricity. This can be written as dot dash or .
Worksheet 3Numbers in code
What are codes?
Changing information from one type to another is known as encoding (or putting it into code). You can encode a message as Semaphore using flags. In a way, the human voice is encoded before we speak because the air we use changes as it passes through our vocal cords.
Communications Projects Primary:
Communicating with numbers
Visit our interactive Old Exchange demonstration and try it for yourself.
Visit our interactive Cost of your call demonstration and try it for yourself.
