I suggest you try to get hold of some graded readers to start with. Your students will find the real text too difficult at pre-intermediate level. Many publishers also provide guides for teachers to accompany the readers.
You can also look at the following, they are all posts that I have replied to on similar topics.viewtopic.php?f=2&t=106 viewtopic.php?f=2&t=423viewtopic.php?f=2&t=1948
Please feel free to write in again, if you don't find hat you're looking for.