It´s a song activity to review comparative and superlative as well as new words. The first exercise is to try to order the endings before listening to the first part of the song. You may go to the glossary to pre- teach any new words from this first exercise. The second exercise is to listen to the song and number the adjectives in order they appear. There are some exercises on page 2 to review the comparative and superlative forms of the adjectives in the song.
The key is on page 3.