Wikis allow you to add widgets or little tiny apps.
It's really easy to edit!!!
The most obvious widget would be a youtube or similar video. Navigate to the video you want and click on the button that says "embed." This will give you a little piece of html code. Copy it (ctrl C). Hit the widget button on the edit bar and click "Video" on the upper left side. Choose the type of video (e.g., youtube). Paste the code (ctrl V) into the box provided and hit save. Your video will be embedded in the wiki rather than just having a link to it. Note that some videos will not allow you to embed them. In those situations, you will have to just just the url of the video as a link. Many of the videos on this wiki are embedded this way--look at the page on Blues or the page on Claymation, for example.

The pages that have the "Select a Text and Click Here for Speech" are using a widget from Vozme:
http://vozme.com/webmasters.php?lang=en

Just a couple of notes and then you can see samples of widgets.

As with anything that pretty new in relation to technology, your mileage will vary. I have not been able to get Google widgets to play nicely with Wikispaces. When Wikispaces won't digest a piece of code, it simply won't show that part. So if you add a neat widget and hit save and you don't see anything where the widget should be, then there is something that isn't working. If you know html, you may be able to fix it yourself. Otherwise...keep looking. People are making widgets all the time.

When you are looking at a collection of widgets, try to find the ones that are the highest rated. Those are more likely to work than a widget someone created yesterday.

Here are some interesting widgets (that work on Wikispaces!).
Randomizer


Every number has special properties. Fun way to explore and think about math.


Other Wolfram Alpha widgets (http://developer.wolframalpha.com/widgets/gallery/featured/):




Here's one from the CDC:
CDC Act Early Quiz. Flash Player 9 is required.
CDC Act Early Quiz
Flash Player 9 is required.


And a flu-tracking widget from the same folks:
CDC Flu View Map Widget. Flash Player 9 is required.

http://www.sanebull.com/widgets -->




Here is a comments widget:


At the bottom of that widget is a link that will allow you to put that widget on any page you make. Just copy the html code, go back to the wiki, hit "widget" on the edit bar, then hit "Other HTML" which is at the bottom of the left hand column of links. Paste the code there and you have a way for readers to make comments easily.






http://news.cnet.com/8301-17939_109-10277036-2.html

http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=math+widget#pq=math+widget&hl=en&sugexp=lttmoc&cp=13&gs_id=y&xhr=t&q=math+graphing+widget&pf=p&sclient=psy-ab&source=hp&pbx=1&oq=math+graphing+widget&aq=f&aqi=&aql=&gs_sm=&gs_upl=&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=5e678aa7fabde2aa&biw=1440&bih=799




Testing, one, two, three, testing.