Sky appears to our students as a vast volume surrounding the Earth. The most striking astronomical
events that they can witness in the sky are lunar phases and eclipses. However, eclipses do not
occur as often as full and new phases of the Moon. This difference is due to the fact that the
orbital planes of the Moon and the Earth do not overlap. The purpose of this study is to describe
and actualize a method to estimate the value of the inclination angle of the orbital plane of the
Moon to the ecliptic plane. Essential steps of the estimation method and a geometrical construct are
given to assist the visualization and calculation of the inclination angle. Measurements required
for such an estimate are the arc lengths of the lunar and solar directions from the zenith direction
of an observer. The estimation method was actualized at the full Moon date that occurred about three
months after the full lunar eclipse in 2015. This study also provides students with the chance to
realize …