In a Results section the author presents the information in an explanatory fashion that allows the reader to understand what was found during the study. The author can also include explanatory text
http://www.languages.ait.ac.th/EL21RES.HTM
In a discussion section the author interprets their results inlight of what is already known about the study. This section should always connect to the introduction.
Also you ask questions that weren’t there in your original study.
http://abacus.bates.edu/~ganderso/biology/resources/writing/HTWsections.html#discussion
The conclusion is the section where you can state your last words on the subject you are presenting.
http://www.unc.edu/depts/wcweb/handouts/conclusions.html
In this source The author combines the discussion and conclusion and states how they can be used to work together.
Sections of this article include:
- Purpose Of
- Internal Factors
- External Factors
- Applicability of the Evidence
- Try to draw some discussions
- Try to draw some conclusions
- Common errors in reaching conclusions
http://ssrc.tums.ac.ir/SystematicReview/Discussion.asp