(Click chart to enlarge)
Schmidt, William H., Wang, Hsing Chi., McKnight, Curtis C., J Curriculum Studies, 2005, volume 37, number 5, pages 525–559

(Click chart to enlarge)
Schmidt, William H., Wang, Hsing Chi., McKnight, Curtis C., J Curriculum Studies, 2005, volume 37, number 5, pages 525–559

[...] In somewhat related news, here’s a great chart of just how many math topics we throw at our kids each year as opposed to A+ countries where students excel in math… http://zerosumruler.wordpress.com/2010/12/06/usvsacountriesbreadthvsdepthinmathwhichisbet… [...]
[...] The busiest day of the year was December 21st with 408 views. The most popular post that day was US vs A+ Countries: Breadth vs Depth in Math. Which is better?. [...]