This is the main product of the company Quizlet.

Quizlet
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Quizlet is a learning tool for students age 13+.

Quizlet was created by Andrew Sutherland in October 2005 as a way to study his high school French vocabulary. It quickly spread within his school and was launched publicly in early 2007. Users create their own flashcards or choose from sets made by others.

There are multiple learning modes.

Flashcard: online flashcards and text-to-speech audio
Speller: type what you hear in an audio-powered study mode
Learn: test and track what you users know
Test: randomly generated written, matching, yes/no, and multiple choice tests
Scatter: a fast-paced action game for dragging terms to their definitions
Space Race: a challenging typing game of terms and definitions

Mobile apps are available for iPhone, iPad, and Android.

Milestones
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Quizlet — Text-to-speech audio (1/13/11)

Posted 2/14/11 at 4:08pm via quizlet.com
Quizlet — 1 million registered users (7/15/10)

Posted 7/22/10 at 11:34pm via quizlet.com