Reflection: Student Ownership Pineapple Enzyme Lab (Day #3 of 3) - Section 4: Closure: What did we learn? Where do we go from here?


So after all of this effort, did they actually "get" it? That is the $64 million dollar question, isn't it? Well, you take big and small victories where you can and then try to regroup, reteach, and clarify as best as you can. In student B's lab report there is much to be proud of!

When examining the evidences, the resulting claims, and underlying reasoning I can find little fault in the lab report. I have made some comments in the "Conclusion" section with respect to the thinking process so take a gander and see if you agree with my assessment!

On a separate note, I please refer to this podcast if you want to learn how I go about teaching the art and science of writing conclusions for lab investigations.

Using this scorechart, I would rate Student B's conclusion as:

Conclusive Statement: 1/1 (made a specific determination of the outcome. i.e. correct hypothesis)

Supporting Data #1: 1/1 (described condition of gelatin mixed with frozen pineapple)

Supporting Data#2: 1/1 (described condition of gelatin mixed with room temperature pineapple)

Explanatory Language: 1/1 (reasons through the connection between temperature and enzyme function)

Scientific Explanation: 0/1 (refers to enzymes being denatured by freezing conditions. Although this is an incorrect cause and effect relationship the student later describes the variable effect that colder temperatures have on enzymes; there was still some activity after having been frozen and in her words "This suggests that the enzymes could handle even slightly colder temperatures".) All in all, I would not give the point because I want students to be super clear about the "what it means" behind the "what I see".

Total Attributes: 4/5

Total Score: 2/2

  Student Ownership: Putting all of the pieces together to form a holistic understanding...
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Pineapple Enzyme Lab (Day #3 of 3)

Unit 2: 2) Cells ("Form and Function")
Lesson 19 of 20

Objective: Collect evidence and use it to develop a claim and compose an argument about the effect of temperature on enzyme activity.

Big Idea: Enzymes are protein-based molecules that catalyze (speed up) chemical reactions. Cell chemistry is essentially impossible without sufficient quantities of properly working enzymes.

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2 teachers like this lesson
Science, enzyme-catalyzed reactions, cells, form vs. function, investigation, denature, bromelin, substrate, enzymes, gelatin
  55 minutes
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