Today, it’s a different world than 25 years ago. Schools and teaching is less about formal presenting, and more about interactivity, and working with all types of documents. In a high school, that might be charts of data in Excel, or reading an article off of the web – projected up on the display, or Word type documents. The point, today, in the classroom students see small type, small objects, probably more than they do any sort of formal “old school” presenting. In a middle school, it might be geometry, or algebra, or history.
Example: If the class is studying the Gettysburg address (which is drastically shorter than this document), Lincoln’s famous speech totals 275 words. Yet, as a typical PowerPoint Presentation, with 36-point type, it would take about 8 pages to display the entire two minute speech, in order to discuss with the class.
First image below: The first paragraph of the speech with 36-point type (typical PowerPoint).
Second Image below: The entire speech on one page, done in 14-point type (slightly larger than standard size), on a single slide.
Now, let’s see who in the class can read what, using 4/6/8 or Equivalent Visibility:
4/6/8 says that 4x is for when you need to be able to see the details, small type of the screen. 6x is you can see most of it, but not all, details missed. Good for video conferencing too.
8x allows you to be furthest back from any size screen, but is generally for watching videos, as small text and details are completely illegible.
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