paragraph development 

http://web.uvic.ca/wguide//Pages/ParOrderIntro.html (from The UVic Writer's Guide)
http://www.uottawa.ca/academic/arts/writcent/hypergrammar/parunif.html
(from HyperGrammar)
http://www.uottawa.ca/academic/arts/writcent/hypergrammar/rvpardev.html(from HyperGrammar)

 http://web.uvic.ca/wguide//Pages/ParUnity.html (from The UVic Writer's Guide)

topic sentence 

http://web.uvic.ca/wguide//Pages/ParTopicSent.html (from The UVic Writer's Guide)
http://www.bartleby.com/141/strunk.html#10(from Elements of Style)

thesis statement 

http://writing2.richmond.edu/writing/wweb/thesis.html(from Writer's Web)

wrong transition 

http://web.uvic.ca/wguide//Pages/MarkTrans.html (from The UVic Writer's Guide)
http://www.english.uiuc.edu/cws/wworkshop/writttech.transiti.htm

confused thinking; logic 

http://web.uvic.ca/wguide//Pages/LogicTOC.html (from The UVic Writer's Guide)

coherence 

http://owl.english.purdue.edu/handouts/general/gl_cohere.html
http://web.uvic.ca/wguide//Pages/ParagraphTransitions.html (from The UVic Writer's Guide)