Handout

Greatest Engineering Achievements of 20th Century: Air Conditioning & Refrigerat

Curated by ACT

Students learn about air conditioning and refrigeration in the 20th century. The resource consists of historical information, a timeline, and a personal essay by a key innovator.

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Classroom Considerations
  • Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)
  • This resource is only available on an unencrypted HTTP website.It should be fine for general use, but don’t use it to share any personally identifiable information