This site has a huge number of compelling visual writing prompts with text and questions to get your students thinking. There is something for everyone here!
http://ictmagic.wikispaces.com/English
Eliminating math misconceptions is difficult and merely repeating a lesson or extra practice will not help. Telling students were they are mistaken will not work either.
Recognizing student misconceptions and immediately focusing on the misconception is important. Providing guiding questions using inductive reasoning is the best approach, along with the use of writing prompts which help reveal further student misconceptions.
FROM THE ABOUT PAGE...
the real purpose of this exercise is to alleviate
our natural tendency to edit everything-and learn
to flow.
an analogy would be a film camera:
when a film is shot, the camera just rolls and captures
everything-good and bad. when all the shooting is
complete, the raw film is edited into a cohesive piece.
the camera operator doesn't keep stopping the camera and
rewinding and editing on-the-fly-the camera just rolls.
if it were to stop, some of the best performances
and spontaneous moments might be missed.
so:
be the camera. well, that's a stupid saying, but
you get the idea. in writing-just flow. go back later
and edit.
Go write.