Sauls1212
For my year 12 assessment, those who got the best marks were all the most passionate. For the speech it is not so much about the content of your argument(within reason, must be logical and appropriate), it is more about the presentation. Most important parts are(in my opinion): Open body language, hand gestures, varying in pace & tone for emphasis, be LOUD, head up with eye contact.
Choosing a topic you are passionate about allows you to be confident - increasing voice level, body language, eye contact and ease of delivery - which will definitely increase your mark.
For an introduction, I'd suggest doing an interesting or captivating start(such as an anecdote of a victim of the cause, or potential good fortune which will arise from your solution) - which is increased by using flowery language with lots of good adjectives.
Then to finish the introduction I signpost what my 3 main body paragraphs are.
Eg. Why the school system should be changed:
(sizzling start)Each and everyone of you in the audiences today understand the severity of what I am talking about today. Too many poor victims have been TORTURED by the tyrants that is VCAA. Their despotic ranking system only belittles kids, obliterating any chance of them having self-worth. Good morning students and teachers, today I'm here regarding the ATROCITY that is our Australian school system. (here is where I signpost) Everyone has their strengths and weaknesses, and as Einstein said - if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid - which to me perfectly summarises our current system(first idea - school isn't good at sorting kids abilities). What's more, mental health concerns in teenagers has drastically risen, permitted by the nefarious abuse of kids just like us.(Second idea - mental health) But ultimately, our school system's results are abysmal when compared to other systems such as in Finland(3rd idea - the solution - a different school system like Finlands).
Then start your first body paragraph.
Hope you find this helpful, and good luck!