Links to these two posts were recently juxtaposed at the NewsAlert site:
The new New Math: Byzantine subtraction in Common Core
How algorithms shape our world (a TED talk)
Is the standard subtraction algorithm genuinely so hard for so many children? Are these other methods truly easier? I convinced the answers are, respectively, “no” and “yes”.
Cross-posted from http://www.joannejacobs.com/2014/10/interesting-juxtaposition/