One source for great lesson plans and activities is provided by Common Sense Media.
Common Sense Media offers this FREE Digital Literacy and Citizenship Curriculum to help educators empower their students and their school communities to be safe and responsible as they navigate the digital world.
Common Sense on E-rate and CIPA: Toolkit for Teachers http://www.commonsensemedia.org/educators/erate-teachers
Teacher toolkit provides:
• Lesson plans and activities
• Engaging student videos
• Classroom posters