<P> There are perhaps three hundred sign languages in use around the world today . The number is not known with any confidence ; new sign languages emerge frequently through creolization and de novo ( and occasionally through language planning ) . In some countries , such as Sri Lanka and Tanzania , each school for the deaf may have a separate language , known only to its students and sometimes denied by the school ; on the other hand , countries may share sign languages , though sometimes under different names ( Croatian and Serbian , Indian and Pakistani ) . Deaf sign languages also arise outside educational institutions , especially in village communities with high levels of congenital deafness , but there are significant sign languages developed for the hearing as well , such as the speech - taboo languages used in aboriginal Australia . Scholars are doing field surveys to identify the world 's sign languages . </P>
<P> There are perhaps three hundred sign languages in use around the world today . The number is not known with any confidence ; new sign languages emerge frequently through creolization and de novo ( and occasionally through language planning ) . In some countries , such as Sri Lanka and Tanzania , each school for the deaf may have a separate language , known only to its students and sometimes denied by the school ; on the other hand , countries may share sign languages , though sometimes under different names ( Croatian and Serbian , Indian and Pakistani ) . Deaf sign languages also arise outside educational institutions , especially in village communities with high levels of congenital deafness , but there are significant sign languages developed for the hearing as well , such as the speech - taboo languages used in aboriginal Australia . Scholars are doing field surveys to identify the world 's sign languages . </P>
how many kinds of sign language are there in the world
how many kinds of sign language are there in the world
perhaps three hundred
perhaps three hundred