Great tutorial. Attractive and appropriate for college and high school intermediate students, good exercises for the subjunctive and beautiful photos. Although instructions are in English I will recommend it to my Italian students of Spanish.
I found the word prognóstico in exercise 8 Verbs of doubt and certainty. This word does not appear in the RAE dictionary nor in the RAE corpus.
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You can listen to the song at http://es.youtube.com/watch?v=uJimpth-yNs