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810 articles found
Education
Modern educational methodology is continually changing and undergoing innovation. From traditional educational methods to the introduction of digital technology, education has deve
Earth science
Why has Earth swung back and forth between glacial and interglacial periods? This article explains the Milankovitch cycles, the slow but regular changes in Earth's orbit and axis:
Statistics
The coupon collector’s problem asks how many random draws it takes, on average, to collect every type at least once. Learn how the average is calculated, what the numbers look like
Physics
Optics is a field of scientific research concerned with light and vision, exploring the properties of light and its interactions in depth. Light is an essential element of our ever
Earth science
A caldera is a large, round basin that forms when the ground above an emptied magma chamber collapses. Learn how it differs from a crater, how it forms, famous calderas around the
Education
Andragogy is the art and science of helping adults learn. This article covers how the idea emerged, Malcolm Knowles’s six assumptions about adult learners, examples from everyday l
Psychology
Hindsight bias is the mental habit of believing, after something has happened, that we could have predicted the outcome from the start. We look at the experiments that first confir
Library & information science
This time, I would like to write about MARC, which is used in libraries. MARC and cataloging cover such an extensive range of material that I plan to divide the discussion into sev
Statistics
In many naturally occurring sets of numbers, smaller leading digits appear far more often: about 30.1% start with 1, and only about 4.6% with 9. This article explains the definitio
Film & media
This time, I would like to put together material on the concept of plot, which is essential to understand when writing scripts or stories for films, TV dramas, novels, and similar
Chemistry
Whether a chemical reaction takes one step or many, the total heat is the same if the start and finish match. This article covers who Hess was, why the law holds, how to calculate
Business administration
A step-by-step look at the marketing strategies used by companies and organizations: 3C analysis of the environment, SWOT analysis, the STP strategy, and the 4Ps of the marketing m
