I have started the four blocks program for reading with my students. I am trying to implement the working with words block right now. One of the activities is called "Guess the Hidden Word" and I made a Keynote (Mac version of PowerPoint) for my class. The students were very interested and even my most reluctant students participated at a very high level.
I have tried to imbed a flash version of the presentation using a website called SkyAlbum. Not sure if it is working.