With shows like "The Walking Dead" and others, students are interested in how to survive the Zombie Apocalypse.
One thing they will need is a easy to make water filter to clean dirty water. This type of water filter was seen in a recent episode of "The Walking Dead".
You will need plastic water bottles, sand, gravel, coffee filters, marbles, and any other medium you think can be used to filter water. I do NOT recommend using charcoal or ash, because they are too messy.
It is a great way to explore physical and chemical changes in science.
Key Words: The Walking Dead, Zombie, water filter, physical change, chemical change, Eugine, Rosita, water bottle, water quality, sanitation.