Sign language is a form of communication used by those with hearing impairments, as well as their families and friends. It uses hand and body movements to convey meaning. As technology advances and more and more people interact with the deaf and hard of hearing communities, the need for sign language has grown. This makes it essential for schools to teach sign language in order to prepare their students for the world they live in. Sign language has numerous benefits, both for those with hearing impairments and those without. By teaching sign language in schools, students gain a greater understanding of the deaf culture and can interact with those who have hearing impairments more effectively
This can involve simultaneously combining hand shapes, orientation, and movement of the hands, arms or body, and facial expressions to fluidly express a speaker's thoughts. They share many similarities with spoken languages (sometimes called "oral languages", which depend primarily on sound), which is why linguists consider both to be natural languages, but there are also some significant differences between signed and spoken languages.
Sign languages commonly develop in deaf communities, which can include interpreters and friends and families of deaf people, as well as people who are deaf or hard of hearing themselves. Research shows that babies are not born with a blank slate of their brains when it comes to language. Sign language enables infants to speak earlier than speech language in the early stage of physical development. Next generations might be able to speak both vocally and manually.
A speech impairment affects people who have problems speaking in a regular tone of voice or tempo. Speech impairments make it hard for people to communicate properly, and they can happen in both children and adults.
Most children with speech or language impairment are of average intelligence, but may have other specific learning difficulties such as dyslexia, dyspraxia or ADHD. Speech and language impairment is sometimes linked with conditions such as hearing loss, Down syndrome, cerebral palsy or autism. Chronic ear infections may also be a cause. Some learners have difficulty with both language input and output and need to be taught the communication skills that other learners learn automatically.
People who have speech impairments have a hard time pronouncing different speech sounds. They might distort the sounds of some words and leave other sounds out completely.