Phases of the Moon

Have you ever wondered why we see sometimes more and sometimes less moon? When he disappears, and when he looks like a smile of a cat from „Alice in wonderland”?

-Dimensions: 26×49 cm.
-14 elements+frame and cover.
-Base thickness : 3 mm.
-Puzzles thickness: 5 mm.
-Cover thickness: 3mm.
-Puzzles are painted with blackboard paint, so you can write on in or make your own puzzle design.