There are some fun, age-appropriate, and useful lessons on internet safety and responsibility accessible through a website called USA-SOS.
All you have to do is hand each kid a scavenger hunt worksheet (there is one tailored for each grade level from 3-8, but I’ve also sent a copy of it to your Drive).
If you want, your students can also register and complete an online post-lesson quiz through this site.
Related resources to download and print:
soomin chao 