What country are you in? That might help people comment on what other options you may have.

As for the resume, while I certainly don't have an impressive resume myself (I'm a student), I'd advise you to write a cover letter if you haven't already. You can find examples of cover letters online, but they generally introduce you without going into your work history. Just a basic introduction, perhaps outline why you want the job you're going for and why you want to work for that company, why you'd make a good match for the job etc. Just BS it.

I see you've listed your duties under your experiences. Perhaps listing the skills you've gained under those internships would look better to employers. Also be sure to list any other skills you may have. If you're confident with computers, definitely list that along with any programmes you've learnt, even if they seem irrelevant. Be sure to list any accomplishments you feel you've made as well - if you feel like you've made any kind of impact, from one on one tutoring during class for example, shows you're interested in teaching and not just babysitting from behind the desk. Mention if you feel the class did better overall with you there. Suppose it's a bit late now, but letters of recommendation from the teachers you worked with (if you feel like they'd be ok to give a reference, ask to put their number in perhaps).

Resume's are really just bullshitting. It sounds bad, but the people that overestimate themselves and really preach about it look better on paper then just listing workplaces. Try to keep it within two pages though. Brief cover letter (paragraph or two), then your resume should only take one page.

Also remember any difficulties you've overcome during your experience or education. You can include some in your resume, but employers will want to hear about that during interviews. Hope it helps, best of luck.