Methods of learning sign language:

Buy a Chinese sign language book (this book is compiled by the Education and Employment Department of China Disabled Persons' Federation and China Deaf Association), which contains many words, charts and detailed descriptions. Look at the contents of this book and learn step by step. Your fingers need more practice, and you will be flexible.

There is also a mathematical sign language book: an auxiliary teaching material for mathematical sign language in deaf schools. With the above explanation, you can learn the knowledge of mathematical sign language.

Development course:

Sign language has existed since ancient times, and it is not specially used for deaf people. The ancients used gestures to communicate opinions, and then slowly produced language. The ancients were mainly hunting and farming, and there were few rules to follow in society, so deaf people could adapt to life. However, after the development of culture, society progressed and many abstract symbols appeared. In order to adapt to social life, they have to express their feelings in sign language.

Sign language has a long history, but formal deaf-mute education only developed more than 400 years ago. It can be seen that Father draper, the first great French educator for the deaf, created and invented sign language to facilitate management and training. 1760, his shelter was changed into a national school for the deaf, and he was appointed as the first principal.

His assistant thinks that we should write a sign language dictionary and spend a lot of time on sign language editing. Unfortunately, gestures are too complicated to be widely used. Besides, a word sometimes needs a lot of gestures to explain clearly, especially the abstract expression is more difficult, so after 1880, I had to switch to oral English teaching.