# Is ripping off exercises plagiarism? [closed]

Just a quick question. I teach some undergraduate mathematics. I like to produce notes that contain exercises.

Sometimes I make my own exercises, sometimes I take exercises from various sources and edit them slightly and sometimes I take materials from the previous teacher.

However just recently I found myself copying a full set of exercises from a textbook and instantly a wave of guilt came over me.

What I would like to know is how do people feel about this? Is a mention at the start of the notes sufficient or should I really reference each instance where I take an exercise... even with page number.

Any opinions greatly appreciated thank you.

## closed as off topic by Thomas, rschwieb, yunone, Hans Lundmark, J. M. is a poor mathematicianSep 29 '12 at 10:38

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• This might also be a good question for Academia.SE. – Jonas Meyer Sep 28 '12 at 20:17
• To avoid the charge of plagiarism: if you publish the exercises, give the reference to the source. – GEdgar Sep 28 '12 at 20:17
• If you want students to work out solutions themselves (as opposed to looking them up) maybe providing page-number references on the same sheet is not good. If you want to provide references, prepare solutions later with the full reference. – GEdgar Sep 28 '12 at 20:19
• If it's wholesale copying, I'd probably credit the source unless it's something routine, such as "Evaluate $\displaystyle\int\frac{dx}{4+x^2}$" or "Find $17\times 29$." – Michael Hardy Sep 29 '12 at 1:28