How does he plan to teach rational functions? I guess since many teachers don't compare rational functions with fractions, that might be doable. Or is it the case that rational functions aren't being taught well today because teacher neglect to teach fractions well and make that connection?
Beyond fractions: a century from now...
How do you think the topic of fractions will evolve a century from now?
http://www.usatoday.com/news/education/2008-01-23-fractions_N.htm