I'm recommending this software because I've used it over the years to protect my hands. No, the dictation isn’t perfect, but it isn’t solely for dictation. The most helpful feature is the ability to create custom commands (with no coding) and use a mouse grid for surfing the web and clicking on links. Although your school might not have this software, you could use it for emails and surfing, reducing the strain on your own wrists and elbows.
How do your students know when they are spending far too much time online? This is one of a series of Australian classroom lesson plans about digital life, but it's applicable to U.S. students, as well. Several activities are given that help students learn to recognize when they're spending too much time online, including a “Lifestyle Audit.”
Did you know that both Bill Gates and the late Steve Jobs enforced firm limits on how much time their children were allowed to spend on devices? According to this article, research is showing that increased screen time — even if it’s “active, rather than passive interaction,” is damaging to children. The article advocates “low-tech learning” for children.
"An unquestioned belief in the power of gadgetry" pervades our culture, according to this thoughtful piece. According to the studies cited, Internet access has not actually resulted in educational gains, especially for poor students. The article concludes that students only benefit from classroom technology when it is used as a tool by a skilled, purposeful teacher. Perhaps more judicious use of tech could be the answer?
The top six software programs for forcing computer users to take breaks are listed here. This would be helpful for your students to consider installing on their home and school computers. I have used AntiRSI for Mac and found it very helpful and user-friendly.
This illustration on Pinterest might look a bit dated, but it demonstrates perfectly and clearly how your students should be positioned while typing on a keyboard. You can use this to check their posture (and yours) to avoid repetitive strain injuries.