Abstract
Constellation study is basic to deriving information from the sky. To view the constellations requires perceptual skills; A developmental theory is considered through an analysis of research studies. Although perceptual "methods" are available to the child early in life, development seems to occur in factors supporting the "method" used. The level at which learners are "perceptually ready" to begin constellation work, and instructional methods which can be used to encourage this perceptual readiness, are considered.
