Daily Content Archive
(as of Tuesday, January 31, 2017)| Word of the Day | |||||||
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shoestring
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| Daily Grammar Lesson | |
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Present Perfect Continuous TenseThe present perfect continuous tense is formed by using a form of the auxiliary verb "have" along with "been" and the present participle of the "main" verb. The present perfect continuous is very close in meaning to how we use the present perfect tense. How do they differ? More... | |
| Article of the Day | |
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 TessellationsTessellations are patterns of carefully juxtaposed, non-overlapping shapes—like the multicolored tiles of a mosaic—that fill a given surface. They have been used throughout history, from ancient architecture to modern art, and are frequently found in the works of M.C. Escher. Regular tessellations, which are highly symmetrical and made up of congruent, regular polygons, can only be formed using equilateral triangles, squares, or hexagons. Where can tessellations be observed in the natural world? More... | |
| This Day in History | |
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_in_dynamics_test_chamber.jpg) United States Launches Explorer I (1958)Explorer I was the first American satellite. It was launched four months after the first artificial satellite, Sputnik I, was put into orbit by the Soviet Union, beginning the so-called space race. Although it carried a number of instruments, Explorer I was relatively small, weighing just 30 lbs (13 kg). It stopped transmission of data later in 1958, when its batteries died, but remained in orbit for more than 12 years. Where did it make its fiery reentry? More... | |
| Today's Birthday | |
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 Jack Roosevelt "Jackie" Robinson (1919)Robinson, a vocal member of the Civil Rights movement, was the first African-American baseball player in the modern major leagues and the first African American to be inducted into the Baseball Hall of Fame. In 1949, he led the National League in both stolen bases and batting average and was named its most valuable player. In recognition of his accomplishments both on and off the field, Major League Baseball retired Robinson's number in 1997. How many times did he "steal home" during his career? More... | |
| Quotation of the Day | |
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 They say that none of us exists, except in the imagination of his fellows, other than as an intangible, invisible mentality.Edgar Rice Burroughs (1875-1950) | |
| Idiom of the Day | |
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get the gist— To understand the central, essential, or general matter of something, such as an argument, speech, concept, process, etc., without being proficient in the more specific details. More... | |
| Today's Holiday | |
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 Nauru Independence Day (2020)This island in the Pacific Ocean gained independence from Great Britain on January 31, 1968. It had been governed by Australia. Independence Day is a national holiday in Nauru. More... | |
| Word Trivia | |
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Today's topic: request | |