This is a crossword puzzle but with a twist. One student has the clues for another student's puzzle. The student must say "Necesito dos horizontal" and the other student will read that clue. The asking student figures out the answer and writes it in his/her puzzle. The other student then gets to request a clue. I have students initial next to the clue they gave and only allow a student to give 2-3 clues to the same student just to ensure they mill about the room and ask different students.