Table 3 Translation of pH concepts into statements that became the pH portion of the rubric

__0__ Does not provide reasoning or provides inappropriate reasoning.

Provides all reasoning components: WHAT evidence means and WHY these results?

pH Reasoning

__1__ Stream is acidic? Basic? Neutral? correct

__1__ Correct Standard –most neutral a couple slightly basic (excellent or good – a couple fair)

positive results:

__1__ Most organisms need neutral pH or will die

__1__ Example: name of organisms and pH range

needed

__1__ Example - product and pH from land-use and

run-off

__1__ Buffers – define