http://www.ck12.org Chapter 1. Human Biology
MEDIA
Click image to the left for more content.- What is a communicable disease?
- What are some pathways by which germs can pass from one person to another person?
- Diesease Prevention: It’s In Your Handsat http://www.youtube.com/watch?v=s0zCzuKiYu4 (2:32)
MEDIA
Click image to the left for more content.- Why is hand washing effective in preventing the spread of some diseases?
- How long should you wash your hands to help prevent the spread of disease?
Review
- What is the single most important way to avoid pathogens?
- How can you avoid infecting others when you are sick?