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2. Flashcard - Wikipedia

   en.wikipedia.org/wiki/Flashcard

   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 ...

3. Multiplication - Wikipedia

   en.wikipedia.org/wiki/Multiplication

   e. Multiplication (often denoted by the cross symbol ×, by the mid-line dot operator ⋅, by juxtaposition, or, on computers, by an asterisk *) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. The result of a multiplication operation is called a product.

4. List of flashcard software - Wikipedia

   en.wikipedia.org/wiki/List_of_flashcard_software

   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.

5. Leitner system - Wikipedia

   en.wikipedia.org/wiki/Leitner_system

   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 ...

6. Brain Quest - Wikipedia

   en.wikipedia.org/wiki/Brain_Quest

   It sold 4.2 million copies in its first 16 months, [1] and made the New York Times Bestseller list for children's books. [ 2 ] Brain Quest is primarily intended for school children from grades 1 through 7 , but some card sets are geared towards younger children.

7. The History of Mathematical Tables - Wikipedia

   en.wikipedia.org/wiki/The_History_of...

   The History of Mathematical Tables: from Sumer to Spreadsheets is an edited volume in the history of mathematics on mathematical tables.It was edited by Martin Campbell-Kelly, Mary Croarken, Raymond Flood, and Eleanor Robson, developed out of the presentations at a conference on the subject organised in 2001 by the British Society for the History of Mathematics, and published in 2003 by the ...