Global warming, 2/3 Republican deny it, more than 3/4 Democrats believe it: http://www.businessweek.com/news/2012-09-30/global-warming-l...
Creationism is 38% for Democrats, 60% for Republicans: http://www.cultureofscience.com/2011/08/19/republicans-and-d...
I think Republicans are more likely not to want to mention or distribute condoms to teens in sex education, but I don't regard this as quite the same general disregard for science and math.