The research has shown that the most common misconception about the cause of the phases of
the moon is the earth’s shadow being cast on the surface of the moon, blocking sunlight. Although this
misconception does not work with the timing of the moon’s orbit or the shapes of some of the phases, it
is still a difficult concept to redirect.
Children’s literature seems to be one of the culprits perpetuating this misconception, although
textbooks, diagrams and teaching practices that are inaccurate or ineffective can contribute to the
ongoing misunderstanding of the student.
The misconceptions about the cause of the phases of the
moon can be best redirected by giving the students experiences in thinking about space in three
dimensions, and in making observations of three dimensional models. The use of models, especially
dynamic models that students can step into and get a proper perspective would be of most value in
correcting the misconceptions involved with the phases of the moon, as well as reinforcing the new
understanding students acquire.