Sing along as your students finally learn the difference between opaque, translucent, and transparent. The song relates opaque objects to things you cannot "o-peek light." Translucent items are classified in the song as "blurry", and transparent objects can be "seen through quite clearly." The song repeats the verse three times with each verse sung faster than the first. The preview is part of the second round of singing. Good luck keeping up on the last verse!