Are you thinking of supplementing traditional textbooks with digital media? If you’re looking for websites and other resources for your curriculum topics, take a look at SciLinks, NSTA’s collection of vetted websites. Access to the site is free, and a free registration will give you access to even more features.
You can find websites in the database either by using the codes in your SciLinked textbook (look for the logo) or NSTA publication or by searching for a keyword and grade level on the site.
As a teacher, you can provide logins for students to search for sites, give them a list of suggestions, or include the links in another online document such as Moodle, a social media site, a class blog, or your website. With the “Favorite Websites” feature of SciLinks, you can create your own subset of websites to share with students. For interested or advanced students, you might go up to the next grade level or you could go down a level for students who may struggle with the text.  Share a login with the librarian so that he/she can remind students of this resource. If your students use the technology at a local public library, perhaps the staff there could be alerted as to how and why students would access this.
One thing I’ve enjoyed over the years is using the SciLinks websites to keep current on topics such as human genome research, earthquakes, or climate change. If you’re unfamiliar with a topic, searching for sites geared to middle or high school students would be a quick and painless way to learn more about it.