Edward Tufte on a worthy alternative to PowerPoint
An excellent paper size for presentation handouts is A3, 30 by 42 cm or about 11 by 17 inches, folded in half to make 4 pages. That one piece of paper, the 4-pager, can show images with 1,200 dpi resolution, up to 60,000 characters of words and numbers, detailed tables worthy of the sports pages, or 1,000 sparkline statistical graphics showing 500,000 numbers. That one piece of paper shows the content-equivalent of 50 to 250 typical PP slides.
—Edward Tufte, Beautiful Evidence