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2. Luis von Ahn - Wikipedia

   en.wikipedia.org/wiki/Luis_von_Ahn

   Duolingo logo. In 2009, von Ahn and his graduate student Severin Hacker began to develop Duolingo, a language education platform. They founded a company of the same name, with von Ahn as chief executive officer and Hacker as chief technology officer. In November 2011, a private beta test of Duolingo was launched and the app was released to the ...

3. Duolingo - Wikipedia

   en.wikipedia.org/wiki/Duolingo

   Language, music, and mathematics courses and language assessment. Duolingo, Inc. [b] is an American educational technology company that produces learning apps and provides language certification. Duolingo offers courses on music, [5] math, [6] and 43 languages, [7] ranging from English, French, and Spanish to less commonly studied languages ...

4. Duolingo English Test - Wikipedia

   en.wikipedia.org/wiki/Duolingo_English_Test

   The Duolingo English Test ( DET) is a standardized test of the English language designed to be internet-based rather than paper-based. DET is an adaptive test that uses an algorithm to adapt the difficulty of the test to the test-taker. [ 1][ 2][ 3] It was developed by Duolingo in 2014 as Test Center [ 4] and grew in popularity and acceptance ...

5. AOL Mail

   mail.aol.com

   It's quick and easy to sign up for a free AOL account. With your AOL account you get features like AOL Mail, news, and weather for free! ... Should you need ...

6. Play Spanish 21 Online for Free - AOL.com

   www.aol.com/games/play/masque-publishing/spanish-21

   Spanish 21. Bring the fun back to Blackjack! 21's always win, split 4 times, double after split, double down rescue, and bonus payouts! By Masque Publishing. Advertisement.

7. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

8. List of language proficiency tests - Wikipedia

   en.wikipedia.org/wiki/List_of_language...

   The following is a non-exhaustive list of standardized tests that assess a person's language proficiency of a foreign/secondary language. Various types of such exams exist per many languages—some are organized at an international level even through national authoritative organizations, while others simply for specific limited business or study orientation.

9. I’ve taken my kids to Europe many times: My tips for a ...

   www.aol.com/ve-taken-kids-europe-many-090914438.html

   7. Let the kids take an active role in trip planning. Ask for your children’s input and weave their interests into the itinerary and they’ll be more invested in your European vacation. My kids ...