The lesson aims to excite interest in technology and show how GPS works using everyday examples like lightning and fireworks.
Students learn about speed of sound vs. speed of light, and use map, ruler, and compass to locate a point based on time delays.
The exercise involves calculating distances from three friends' fireworks and drawing circles on a map to find your location.
The translation to GPS explains that satellites send radio signals (speed of light) instead of sound, and phones determine location by comparing signal arrival times.