Students have a reminder of the 2 pronunciation rules at the top, and then are asked to separate words into two categories: those that end in n, s, or vowel, and those that do not. Once categorized, they separate the syllables, and then identify the stress according to the pronunciation rule.
This worksheet assumes that students have already learned to separate syllables, but do not yet know rules of pronunciation or where accents go. They do not need to know how to hear the sílaba tónica here as they just follow the rules of pronunciation.
This activity is for after students know how to separate syllables, but before they start adding accents to words. Instructions are in Spanish, made for a Native Speaker class. The first page could be used as in class practice and the second page for homework.