Resumes are kind of the nightmares of the students who are recently graduated from the college. The most important part of your resume is the section which you mention your work experiences but this cannot be expected from someone who recently graduated and in these times the readers of the resume will focus their interest to your educational background and give more importance to this section.
You can also write down the part or full time jobs you have worked during your education, this may provide a great advantage to you when compared with the other newly graduated candidates.
However you need to write them down in a professional manner so that the reader may consider that you can incorporate into their business well even you have never worked before or worked just a little time.
You can talk about your acquisitions while you were working in that businesses and you can also mention what kind of advantages you brought to them once you start working for them. These kinds of details can give the reader a hint about yourself and what you are capable of. Do not think to not writing them since they will not be useful because everything matters in business life.