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For a quick exercise in why students cannot read science textbooks with
comprehension, try blog posts 3 and 4 at:
http://chemreview.net/blog/?p=65
Also see the short and inexpensive paperback "The Knowledge Deficit" by
E. D. Hirsch.
What reading comprehension studies say is: To read with
comprehension (and to answer questions on a well-structured topic
intelligently), first you need to memorize extensive background on the
topic.
Science says that beyond the data in a problem, you can only reason with
elements of knowledge
that are well-organized in long-term memory.
The blog post may (or may not) demonstrate this.
-- rick nelson
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