SUPER Head-Scratchers are puzzle activities that challenge students' skills in phonics, vocabulary, math, logic, and creativity. They can be used individually or in groups, as fun bell work and early finisher activities, or in classroom competition / games. Be warned, however, that once they get started, students might not want to stop! This set includes 20 significantly more challenging puzzles (five worksheets of 4) and their answer keys. This level would be a real challenge for most middle sc