Lesson plan

LP record

The LP (from long playing or long play) is an analog sound storage medium, specifically a phonograph record format characterized by a speed of rpm, a 12- or 10-inch (30- or 25-cm) diameter, use of the "microgroove" groove specification, and a black vinyl (a copolymer of vinyl chloride acetate) composition disk. Introduced by Columbia Records in 1948, it was soon adopted as a new standard by the entire US record industry and, apart from a few relatively minor refinements and the important later addition of stereophonic sound in 1957, it remained the standard format for record albums during a period in popular music known as the "album era". LP was originally a trademark of Columbia and competed against the smaller 7-inch sized "45" or "single" format by RCA Victor, eventually ending up on top. Today in the vinyl revival era, a large majority of records are based on the LP format, and hence the LP name continues to be in use today to refer to new records.

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Article summary

The LP (from long playing or long play) is an analog sound storage medium, specifically a phonograph record format characterized by a speed of rpm, a 12- or 10-inch (30- or 25-cm) diameter, use of the "microgroove" groove specification, and a black vinyl (a copolymer of vinyl chloride acetate) composition disk. Introduced by Columbia Records in 1948, it was soon adopted as a new standard by the entire US record industry and, apart from a few relatively minor refinements and the important later addition of stereophonic sound in 1957, it remained the standard format for record albums during a period in popular music known as the "album era". LP was originally a trademark of Columbia and competed against the smaller 7-inch sized "45" or "single" format by RCA Victor, eventually ending up on top. Today in the vinyl revival era, a large majority of records are based on the LP format, and hence the LP name continues to be in use today to refer to new records.

Key claims

  1. release date: 2001 — source: Wikipedia · confidence 0.95

Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. The record states that the release date is "2001". What evidence would count against this claim?
  3. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  4. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

  1. Wikipedia https://en.wikipedia.org/w/index.php?oldid=1374058392

Key claims and bibliography are generated from the same tracked claims and sources as the article page.