I have to give my first demonstration speech 下一个 week and I plan to speak on how to housetrain a dog. Any 建议 on visual aids 或者 on speaking in general? This is totally new to me. Thanks so much!

Firstly if 你 know your subject and its something that interests 你 thats half the battle won. As 你 probably know the information so well 你 will be able to talk about it without notes well just with a few pointers rather than full written notes. Secondly deep breathing try not to panic. Thirdly I am sure your audiance will understand if 你 are not perfect. Finally pick a spot at the back of the room and if 你 feel your nerves are getting the better of 你 keep going but concentrate on the spot until 你 get your confidence back. Hope this helps and good luck. I have done talks on my Thimble Collection in the past and that I did find scary so I know what 你 are feeling.

Ok, when presenting a speech, dont stand in one spot, make sure u 移动 around a lil. Make sure 你 project, look at your audience, and dont have your Q cards as a saftey shield. Make sure 你 add character in your voice and face, and just make sure 你 read it properly. Some people add to much emphasis at the wrong time which looks dogdey. EG:
And carbon emmisions went UP *2 秒 pause* 33 percent. :D see, that failed. Dont do that >.< and dont be nervous. There will be about 30 speeches that day, 你 wont be remembered 由 your collegues. Unleass 你 SCREWWW IT UUUP D:< 或者 if its rly good and ppl 爱情 IT ^-^

I've never had a problem with public speaking before, i'm nervous at the beginning but as soon as i start to roll i'm fine about.

What 你 could do, is before 你 give your speech is breathe. Inhale, hold for three 秒 and exhale longer then 你 inhaled. This will slow your 心 rate, stop the adrenilin pumping through your system and calm 你 down.
Make sure you're voice is clear and loud but not deafening. What 你 could do, to get the right volume, is ask a friend to sit/stand at the back of the hall a few days before the speech for a fraction of your speech and experiment with volumes. 你 don't want to be talking normally as no one will hear you, but 你 also don't want to scream out the words. Find what's best for you.
Walk around a little, but always keep your face and voice pointed to your audience, 或者 at least to the side if 展示 them something.
Emphasise with your hands. If something is particularly important, hammer it in 由 connecting your hands together etc.
Visual aids - do 你 mean to help 你 remember what you're talking about 或者 to 显示 them what 你 mean?
To help 你 remember 你 could write on your hand the beginning of a sentance, 或者 code words for certain subjects. Print out a sheet of paper with different little pictures for each subject 你 want to cover and just carry around with you/place it on a 表 so if 你 get stuck 你 can calmly walk up to it (don't forget to continue talking) and sneak a peek before 你 begin your 下一个 subject.
To help them understand what 你 mean, have 你 thought of a slide-show? 或者 even better, getting a friend to help and actually bring a house-trained dog to 显示 what 你 mean.