Duolingo is a great resource for anyone looking to sharpen their second-language skills. The platform already offered 30 courses for English speakers, and now it's adding two more in celebration of Indigenous Peoples' Day: the Hawaiian ʻōlelo Hawaiʻi, and the Navajo language Diné.

Hawaiian and Navajo are endangered languages spoken by people native to the United States. By last estimate, there are about 170,000 native speakers of Navajo, making it the most-spoken indigenous language in the country. Hawaiian, on the other hand, was only spoken by about 2,000 people as of 2007. Starting today, both courses are available in beta to all Duolingo users; there are already about 2,400 people taking the Hawaiian course and 2,000 taking Navajo.

A question from Duolingo's Hawaiian course.

To create the Hawaiian course, Duolingo worked with Hawaiian education groups Kanaeokana and Kamehameha Schools. The Navajo course is being developed in conjunction with Utah's San Juan School District. The addition of Hawaiian and Navajo language courses is part of a larger effort to preserve endangered languages, according to Duolingo.

A question from Duolingo's Navajo course.

You can check out both courses now in the Duolingo app.

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