Puzzles (51-60). This bundle of 10 free crossword puzzles will engage the brain and enhance vocabulary building skills. Increase personal vocabulary with solving these created-for-you bundles of crossword puzzles. Printable crosswords are great to stimulate teenager brains in the intermediate and senior classrooms. Engage problem solving skills with home schooled students and English language learners, with intermediate language acquisition, using these bundles of puzzles.