This is a great video on cyber bullying. It provides students with clear steps to follow if they ever are a victim of this. I have used it for the third through fifth grades.
This internet safety video shows the consequences of sharing personal information with strangers. It is a little dated and gets mildly intense, but it gets students' attention and gets them talking about internet safety issues. You'll be surprised how many of your students have had personal experiences with being solicited for information online. This is appropriate for grades 3 through 5.
This video clearly shows kids what personal information is and why they should keep it safe. It is promoted for grades 4 through 6, but it is appropriate for 3rd grade as well.
It's so important for even young students to understand that they should protect their personal information. This video does an excellent job of defining personal information and explaining who it is okay and not okay to share it with. Appropriate for PK though 2.
I love this video for teaching internet safety to young students. It does a good job of defining what the internet is so little ones can understand. It explains how the internet can be fun and helpful but also scary without rules and an adult helper. I have used this for PK through 2nd grade.