Tips to seduce him and make him do the first move?

Guy teacher + student = bad end result. If you must, just be generally flirty with him. Eye contact, smiles, touching, etc. If he doesn't go for you, he's probably bound by his job(which is a good thing, considering if you did get with him, who's to say he's not messing around with other students?). Really, you're better off waiting til you don't have classes he teaches anymore. After that, go talk to him and ask him if he'd want to do something sometime and leave him your number. Good luck, Ms. Mature. (Actual sentences would better convey that sentiment, by the way.)

I'm all for how today there's 20 year olds dating 28 year olds, but 15 years?!?!?! that's just plain creepy. This guy is at the age where he's starting to look for something serious to settle down with and you're at the age where you're out there to have fun.

he is way too old for you in my opinion.

I'd imagine if he teaches classes, he's probably bound by the same rules as a professor. 99.9% of teachers would never pursue anything with a student no matter how attracted they were to her

im sorry maybe I'm old fashioned but a 35 year old man has no business with a 20 year old girl. You need to find someone your own age that you can relate to.

Share your sleeping bag and flash him.

If he is does teach for the school like an assistant he's pretty much a teacher. Don't want to sound mean or anything but usually relationships with teachers never work out well.

People can be prudes. Don't listen to them. If you are as mentally mature as you say you are, and I am not doubting your assessments, I would pull him aside sometime during the trip. I would explain to him how you feel about him and let him know, that you do not expect (if you two do end up in one) a relationship between the two of you to change anything. The only thing it would change, would be that you two were a couple. In the classroom, he, respectfully of course, he would be the teacher and you the student. If you feel that you could handle being with an older man, then talk to him. Let him know. I'm not positive but I am pretty sure that you like him, but you do not want it to be something he did out of Lust. If that is what you want, then do small things, don't make a pounce during the trip. Just lay the bait. Nothing to drastic. Invite him for coffee, get him to do photography of the mountain and all its splendor. Then if he definitely shows interest, kick up just a small notch. Then so on and so forth. I'm barely 16 so if you did not agree or like my advice, please let me know. Thanks, Hope everything goes well..

dont pay atention to haters, hah, I think its ok if you like a teacher, I mean, some girls are attracted to guys with authority .. besides, love has no age!
so I recommend you to be totally subtle in the flirting, you know why? cause if he realises how the things is (that you are flirting and like him) you will be distant from the beginning, I mean, his head will say him its not fine, blah blah and all that crap
so you have to flirt him sublty like making jokes, talking with him a lot, smiling, ask him for any favour that make you be alone with him, for example: ask him to help moving X thing, that its in a far/lonely place.. if everybody is having lunch for example ask him to help you with somehting in ur tent..
so ull have alone time there! the thing is to be closer and closer to him, and creating a close frinedship
afer a time, he will fall for ur charm.. and no matter what his head will say(that its not fine to be with a student blh blah) he won't resist
technically thtas how it should work! but the important thing is to start a close frindship first..
i wish you the best of lucks! you go girl!

you're 20, he's 35...definately in a different time zone.

Plus, do you believe in respecting authority? if not, then do what you want, but you're taking a risk in a way. But yeah, if he shows interest in a 20 year old young student like you, why not?

And I'm just wondering why he can't or has trouble finding girls/women in their 30s or late 20s?