In this lesson students are planning and performing a lab to determine which of four unknown solutions are acids.
For the lab activity I provide each group with the following materials:
To begin this lesson I pass out the acid base scientific explanation lab paper and have students spend 3 minutes reading it over to themselves. I then go over the lab with students through the following steps:
In this section of the lesson students are actually performing the lab.
As students are working I walk around and do several things..
When students are done with the lab I have them turn it in. I then grade the lab using the rubric found at the bottom of the acid and base scientific explanation lab.
Overall, students tend to earn most of their points.
The place where students tend to miss points is in their conclusion with their reasoning where they do not use scientific reasoning to show why there evidence supports their claim.
Another place where students tended to miss their points was if they were not specific with their materials used in the lab, but rather just listed all of the materials given to them at their tables.
A final area where students miss points is by not completing their procedures to where someone else can reproduce the lab.