My 4th grade team was lucky enough to have some extra funding for reading this year to help supplement our reading series, and we decided on using it for a subscription to Scholastic's Storyworks magazine.
We have received the magazine three times now and we absolutely LOVE it! Not only do the teachers love it, but the students love it too. Each magazine has been full of articles that are of high interest to the students. A play is included in each magazine as well, which has been a huge hit with the students. Not only does the magazine have great articles, but along with the subscription comes access to the website which is FULL of extension activities. Some of the articles have short video clips that go along with the them and every article has multiple worksheets to use. If you happen to have extra funding and are trying to decide what to do with it, I highly recommend checking out Storyworks!