Lesson plan

Area code 307

Image:Area_code_WY.png|right|Wyoming's numbering plan area and area code (blue) #poly 83 35 344 34 353 243 75 246 Area Code 397 poly 347 139 425 139 420 0 343 0 Area code 605 poly 348 139 429 139 420 243 352 243 Area code 308 poly 155 243 154 274 418 272 418 244 Area code 970 poly 77 192 1 192 1 273 152 273 154 244 72 244 Area code 435 poly 0 45 11 64 14 69 33 62 40 58 53 59 66 58 72 49 82 63 84 36 343 35 343 0 1 0 Area code 406 poly 0 44 10 63 15 68 32 65 39 59 52 59 64 59 72 49 81 59 78 192 0 192 Area codes 208 and 986 desc bottom-left Area code 307 is the telephone area code in the North American Numbering Plan for the entire U.S. state of Wyoming. It is one of the 86 original North American area codes created by the American Telephone and Telegraph Company (AT&T) in 1947. Wyoming's sparse population has not required more than one area code for the state. As of May 2025, it was one of only eleven states with only one area code. 307 is not expected to be exhausted until 2050 by current projections.

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Image:Area_code_WY.png|right|Wyoming's numbering plan area and area code (blue) #poly 83 35 344 34 353 243 75 246 Area Code 397 poly 347 139 425 139 420 0 343 0 Area code 605 poly 348 139 429 139 420 243 352 243 Area code 308 poly 155 243 154 274 418 272 418 244 Area code 970 poly 77 192 1 192 1 273 152 273 154 244 72 244 Area code 435 poly 0 45 11 64 14 69 33 62 40 58 53 59 66 58 72 49 82 63 84 36 343 35 343 0 1 0 Area code 406 poly 0 44 10 63 15 68 32 65 39 59 52 59 64 59 72 49 81 59 78 192 0 192 Area codes 208 and 986 desc bottom-left Area code 307 is the telephone area code in the North American Numbering Plan for the entire U.S. state of Wyoming. It is one of the 86 original North American area codes created by the American Telephone and Telegraph Company (AT&T) in 1947. Wyoming's sparse population has not required more than one area code for the state. As of May 2025, it was one of only eleven states with only one area code. 307 is not expected to be exhausted until 2050 by current projections.

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  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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