The plane of the Moon's orbit is tilted at about 5° with respect to the ecliptic (the plane containing the Earth's orbit and the sun).
This animation illustrates why a waxing or waning crescent moon seems to be tilted at a much larger angle in the sky.
Learning objectives
To switch from one point of view to another in viewing the changing moon.
To illustrate how our senses can distort what we observe in Nature.