Start your class with psychology warm-ups that instantly engage students. These Unit 3: States of Consciousness Bell Ringers are designed to help high school psychology students explore one of the most fascinating areas of psychology: sleep, dreams, circadian rhythms, hypnosis, meditation, psychoactive drugs, and altered states of awareness. Instead of flat review questions, students respond to engaging prompts, real-life scenarios, opinion-based questions, and critical-thinking tasks, making th