This document discusses impaired hearing and guidelines for working with students with hearing impairments. It describes different types of hearing loss including conductive, sensorineural, and mixed deafness. It also outlines the effects of minor, medium, and severe hearing loss on language development. The document provides safety measures for activities involving students with hearing impairments. It gives teaching guidelines including ensuring good lighting and positioning, reinforcing visual and auditory stimuli, clearly explaining activity rules, and designating student partners for support.