This short story is a quick read with some fun hand-drawn graphics. The story comes with suggestions for activities and lessons though anything within electromagnetic spectrum, light spectrum, prism, locks, mirrors, angle of incidence, angle of reflection, etc will easily connect. The story uses the future gen. of characters: Euclid, Iso, and Sufi in a mystery behind a locked wall. Its solution will be enlightening.
Grade level for reading: 4 to 6.