Welcome to RCU.

This is where I cringe at the idea of tossing school projects involving bigger model airplanes at students that have no previous designing or building experience. The answer you want is not as simple as a single article or web page or video can provide. Each wing construction method and overall size and style of hinges used has it's own methods. What you're asking for is basically for someone to write a book for you.

There are a few common points though;

[ul][*] All aileron hinge lines need to have the control surface and a trailing edge member. This is needed to support the ribs at the ends as well as a place to attach the covering and hinges. This trailing edge spar needs to be sized such that the trailing edge has enough stiffness so it doesn't warp or curl in flight unduly.[*] You need to decide early on what kind if hinge you'll use and shape the wing panels trailing edge and the aileron's leading edge to suit the hinge style so the control can move over it's range of arc without binding.[*] Some ailerons are added afterwards and some are cut free from the structure. Which option you use depends on the size of the model and the style of aileron you're using. Strip ailerons are often added after or cut free from an oversize solid balsa trailing edge. Conventional "barn door" ailerons are more typically built into the wing and then cut free afterwards. This style needs to have the rear portion of the ribs at the ends doubled up so when the aileron is cut free from the wing it has the end ribs already in place.[*] If you build a foam wing then the aileron is generally a cut out portion of the wing unless you go with strip ailerons. The portion cut away is typically trimmed again at a new angle. Removing the extra material allows room for the balsa caps to be glued over the foam and sheeting. This closes the surfaces up to make the sections more rigid as well as serving as stronger foundations to glue the hinges into.
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Very likely a lot of the terms in this post are unknown. Sorry about that. They are common terms in the hobby but you're being tossed into the deep end of the pool with concrete on your feet by your teacher. There's lots of material out there in libraries and online that will explain more about how to design and build. A good place to start is in the resource links stickies at the top of this forum and over in the Aerodynamics forum.

ALso check out the free plans links and download a lot of plans and study how they are designed. As to the HOW to build them I'm afraid you're on your own. Just try to think ahead about 3 steps and don't build yourself into a corner.

By the way, usual discussion forum ettiquete suggests that it's much better to start a new thread rather than ressurect a 6 year old one.

If you want help that is more specific you'll need to present a sketch of your intended wing section showing your construction details. From there we can offer something more specific