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Flashcard. A set of flashcards demonstrating the Leitner system. Cards that the learner knows are promoted to a box for less frequent review (indicated by green arrows); cards for which the learner has forgotten the meaning are demoted to be studied more frequently (indicated by red arrows). A flashcard or flash card is a card bearing ...
An alternative method where incorrect answers are only moved back by one box. The Leitner system[1][2][3] is a widely used method of efficiently using flashcards that was proposed by the German science journalist Sebastian Leitner in 1972. [4][5] It is a simple implementation of the principle of spaced repetition, where cards are reviewed at ...
This system first appeared around 2000 BC; [1] its structure reflects the decimal lexical numerals of Semitic languages rather than Sumerian lexical numbers. [2] However, the use of a special Sumerian sign for 60 (beside two Semitic signs for the same number) [ 1 ] attests to a relation with the Sumerian system.
Spaced repetition software. Classic Mac OS software. Utilities for macOS. Utilities for Windows. Utilities for Linux. Android (operating system) software. BlackBerry software. Palm OS software. Educational software.
Anki (US: / ˈɑːŋki /, UK: / ˈæŋki /; Japanese: [aŋki]) is a free and open-source flashcard program. It uses techniques from cognitive science such as active recall testing and spaced repetition to aid the user in memorization. [4][5] The name comes from the Japanese word for "memorization" (暗記).
The first line contains the number " ͵θϡϟϛ δʹ ϛʹ ", i.e. " 9,996 + 1⁄4 + 1⁄6 ". It features each of the special numeral symbols sampi (ϡ), koppa (ϟ), and stigma (ϛ) in their minuscule forms. Greek numerals are decimal, based on powers of 10. The units from 1 to 9 are assigned to the first nine letters of the old Ionic alphabet ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
A prime number (or prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. By Euclid's theorem , there are an infinite number of prime numbers. Subsets of the prime numbers may be generated with various formulas for primes .