4th grade presentation: water treatment on the Oregon trail

Austin Bouck classroom presentation
Apparently I have T-Rex arms here…I was excited!

I had the honor once again to make a presentation to two 4th grade classes at a local elementary school during their Oregon Trail unit. The question posed to the students was:

Your wagon train has broken down, and you need to find water for your entire group. What can you do to make sure the water is safe?

I came in to cover the topic of water treatment. The presentation was based on several key points:

  1. What kinds of hazards/dangers do you need to address with water (or food in general)?
  2. What did pioneers on the Oregon trail know about these hazards in 1811-1840? (hint: no germ theory yet)
  3. Which hazards do different treatments address, and which ones would have been available at the time?

The presentation consists of me blabbering and motioning wildly, a powerpoint, and a visual aid. The visual is a set of configurable pegboards to represent different filtration “pore” sizes, and demonstrate how effective they might be depending on the situation.

4th grade Oregon Trail unit on water filtration
Steeper slope=more water pressure. Bill Nye, whenever you’re ready to have me on…

I can’t post the ppt here because I’m certain I used a number of copyright images. However I was able to record the presentation this year, so I can make the audio available. It’s about 25 minutes long including the questions. But if you’re into this kind of thing, or want to learn about different water treatments, enjoy!