Lab Activity
I recently conducted a lab on ABO blood typing that followed a lecture on the circulatory system and blood components. The students were divided into five groups (no more than four per group) and given slide plates for four different patients plus simulated blood and anti-sera for all four patients. They were also given a study guide plus an analysis and assessment package to complete after performing this lab. I reviewed the study guide aloud with them prior to the beginning of this lab. Basically the questions were along the line of which patient had what blood type, which were Rh+, and how these answers were determined.
The lab itself went very well, only one student needed to repeat the sampling. The problem occurred during the analysis portion. One of the assessments was based on the creation of a Venn diagram and a few other questions required critical thinking. It worked out in the end but there was a lot of whining up to that point about the inability to complete the analysis. This was a simulated lab kit for grades 9-12. I think I assumed too much regarding the ability of my students.
I too struggle with this. I am so used to talking to others in my field I forget to break things down to elementary levels, forgetting the students have no knowledge, and many will not ask questions until testing.
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