Question 2: What other interesting examples of codes from history or the modern-day (digital or non-digital) can you find to inspire or support a lesson about encoding and decoding messages?

Examples encode

SOS is a Morse code distress signal (  ▄ ▄ ▄ ▄▄▄ ▄▄▄ ▄▄▄ ▄ ▄ ▄ ), used internationally, that was originally established for maritime use. In formal notation SOS is written with an overscore line, to indicate that the Morse code equivalents for the individual letters of “SOS” are transmitted as an unbroken sequence of three dots / three dashes / three dots, with no spaces between the letters

Use SOS

Audio: SOS was an audio signal for help at sea, so you can also use this sound to communicate through electronic devices.

light: you can issue an SOS Morse code distress signal : three short light, three long light and three short light.

Image: if you don’t have a light  or a Audio, you can draw, pick up objects around to form the letter SOS, signal for help, ask for help.