Teach students (even young kids) the 20/20/20 rule: every 20 minutes, students should focus their eyes on an object 20 feet away for 20 seconds to protect their vision and create healthy habits.

Schedule stretch breaks to encourage sustainable ergonomics.
- For example, you can also have students do a 2 minute dance-break in your class every 20 minutes.
This is particularly important if the focus is on young kids programming because you want them to build a healthy computer habits.
This is important for helping develop the whole student to build an internal clock to take frequent breaks.
Extra Info from the CS Teaching Tips Team: For more information on computer monitors, eye strain, and the 20/20/20 rule, check out this explainer.
Show students the image below (source).

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