HOW THIS WORKS: Students speak softly into the "receiver" and hear their amplified voice directed into their own ear 10 times more clearly against background noise than they normally would hear themselves. Resulting in an effective learning experience READING: Helps kids with their pronunciation, fluency, and ability to distinguish between similar sounds. The phones turn reading time into a treat! Ideal for Kindergarten through 4th grade SPEECH THERAPY: Widely used by speech therapists & autism learning materials. Has great clarity and sharpness, will improve their talking skills and help them master new words. PACK OF 4: Durable Whisper phones for classroom reading.