The mnemonic ROY G BIV helps people remember what?
AnswerThe colours of the rainbow in order
ROY G BIV stands for red, orange, yellow, green, blue, indigo and violet.
Education · Facts & stats
Study facts & stats
7 fact-checked facts about studying and learning, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
The ancient Library of Alexandria was in which country?
AnswerEgypt
The Library of Alexandria was a great centre of scholarship in the Egyptian port city founded by Alexander the Great.
Going deeper
Testing yourself by recalling information from memory, rather than rereading, is known as what?
AnswerRetrieval practice
Retrieval practice strengthens memory because pulling information out makes it easier to recall later.
Which study method involves explaining a topic in simple words, as if teaching a beginner?
AnswerThe Feynman Technique
Named after physicist Richard Feynman, it reveals gaps in understanding when you try to explain simply.
How many main classes does the Dewey Decimal Classification divide knowledge into?
Answer10
Dewey's system has ten main classes, numbered in hundreds from 000 to 900.
Expert level
Which 19th-century German psychologist mapped the 'forgetting curve' by memorising nonsense syllables?
AnswerHermann Ebbinghaus
Hermann Ebbinghaus tested himself on nonsense syllables and published his memory findings in 1885.
The Leitner system organises flashcards using what?
AnswerBoxes reviewed at different intervals
Cards you get right move to boxes reviewed less often; missed cards return to the first box for frequent review.
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