Noise meters for classroom management | Teaching Resources
5-in-1 Decibel Meter Wall Hanging Sound Level Meter 30-130dB Range 11 Inch Large LED Display Noise+Time+Temperature & Humidity Meter Wide Applications for Home, Studio, Factory, Classroom Noise Meter: Amazon.com: Industrial & Scientific
Noise - O - Meter by Miss Peat | TPT
Voice Levels Wall Chart (Teacher-Made) - Twinkl
Classroom Voice Meter / Noise Level Meter (with illustrations) | TPT