This website would be a useful resource for teachers planning on teaching cyber ethics within their classroom. It covers the topics: 

1. Addressing common myths about cyber threats
2. Explain the effects of words and how they can hurt people
3. Teaching how to be a responsible digital system  

Great resource for primary aged students.  

LINK: https://www.cyberwise.org/post/educating-children-about-cyberethics-3-useful-tips-and-resources