The theme of the 2016 International Mother Language Day is “Quality education, language(s) of instruction and learning outcomes.”

Multilingualism is essential to drive these objectives forward – it is vital for success across the 2030 Agenda, regarding growth, employment and health, as well as sustainable consumption and production, and climate change.
UNESCO brings the same focus to advancing linguistic diversity on the Internet, through support to relevant local content as well as media and information literacy. Through the Local and Indigenous Knowledge Systems programme, UNESCO is highlighting the importance of mother and local languages as channels for safeguarding and sharing indigenous cultures and knowledge, which are vast reservoirs of wisdom.
Mother languages in a multilingual approach are essential components of quality education, which is itself the foundation for empowering women and men and their societies. We must recognise and nurture this power, in order to leave no one behind, to craft a more just and sustainable future for all.
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http://www.unesco.org/new/en/unesco/events/prizes-and-celebrations/celebrations/international-days/international-mother-language-day-2016/