1. Carefully cut out each of the pages for the flip book.
2. Place page 0 face up on the table, put glue on the place indicated.
3. Carefully place page 1 on top of page 0, it is important that the
right edges be even,
press it onto the glue.
4. Put glue on page 1, add page 2. Continue until you have the
cover on top of page 31.
5. Roll back all of the pages except page 0, release one page at a
time, and watch
Moon revolve in its orbit.
