Covering the standards of the nature of light using tools such as mirrors, lenses, and prisms, transparent, opaque, and translucent.
The reflection of light using a mirror and a light source and the physical attributes of a convex lens, a concave lens, and a prism and
where each is used.
In addition to light, sound is also covered. This is to include how sound is produced by vibrating objects and how sound can be varied by changing the rate of vibration, how sound is produced and recognizing the conditions that cause pitch to vary.