February 21 is the 12th annual International Mother Language Day. The UN began celebrating this day to raise awareness of linguistic and cultural diversity and to increase multilingualism.
As this United Nations link explains, the February 21st date honors the anniversary of a 1952 attack on students in Dhaka who were “demonstrating for recognition of their language, Bangla, as one of the two national languages.”
Check out these websites for resources:
The LingEducator Blog- activity ideas
Tumble Books- ebooks in Spanish, French, and Chinese
Book Flix- ebooks in Spanish
International Children's Digital Library- ebook collection includes over 4500 books in 61 languages.