The clock face provides a visual aid in remembering the atomic number of each element (position on clock is atomic number).
The dotted lines next to each element are to copywork the names of the elements, if desired.
The second page uses the tune of "What Does the Fox Say", & matches the first 12 elements to the song in a fun way to aid in memory. There is an option for a second verse, which would include up to the 20th element, Calcium.
The final page, "Notes on the Periodic Clock", gives basic information on atomic number versus atomic weight, and ideas for use of the clock document.