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Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [2] and released to the public in January 2007. [3] Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [4]
Paper flashcards have been used since at least the 19th century. Reading Disentangled (1834), a set of phonics flashcards by English educator Favell Lee Mortimer, is believed by some to be the first known usage of flashcards. [5] A single-sided hornbook was also known to have been used for early literacy education.
5th Battalion, 11th Marines (5/11) was a High Mobility Artillery Rocket System battalion consisting of four Firing Batteries and a Headquarters Battery. The battalion is stationed at Marine Corps Base Camp Pendleton, California. It is the first active duty HIMARS Unit in the Marine Corps.
The 5th Cavalry Regiment ("Black Knights" [1]) is a historical unit of the United States Army that began its service on March 3, 1855, as the Second Cavalry Regiment. On August 3, 1861, it was redesignated as the 5th Cavalry Regiment following an act of Congress directing "that the two regiments of dragoons, the regiment of mounted riflemen, and the two regiments of cavalry shall hereafter be ...
The fifth generation iPod Touch features iOS, Apple's mobile operating system.. Initially shipped with iOS 6, which was released on September 19, 2012, it can play music, movies, television shows, eBooks, audiobooks, and podcasts and can sort its media library by songs, artists, albums, videos, playlists, genres, composers, podcasts, audiobooks, and compilations.
A battle drill is a type of standard operating procedure used in the training of infantry. Based on commonly encountered scenarios, battle drills are used to establish standardized actions of a team, allowing for a quick collective response without the need for deliberate decision making.
These allowed the drill bit to continue rotating at the cutting face at the bottom of the hole, while most of the drill pipe was held stationary. A piece of bent pipe (a "bent sub") between the stationary drill pipe and the top of the motor allowed the direction of the wellbore to be changed without needing to pull all the drill pipe out and ...
This is a list of Korean inventions and discoveries; Koreans have made contributions to science and technology from ancient to modern times.In the contemporary era, South Korea plays an active role in the ongoing Digital Revolution, with one of the largest electronics industries and most innovative economies in the world.