“How does one get a rich understanding? By relating what you are reading to other material that you already know.” Dandelion Willingham article: http://www.aft.org/pdfs/americaneducator/winter0607/CogSci.pdf
This means that to broaden children’s comprehension we need to teach them vocabulary and loads of history, geography, science, literature etc. Then they can relate what they are reading to what they already know. This is much more enriching than comprehension instruction.
Thanks to Susan Godsland of www.dyslexics.org.uk for flagging this up.