Reflection: Routines and Procedures Population Explosion (Yeast Lab) (Day #1 of 3) - Section 4: Closure: What did we learn? Where do we go from here?


NOS, lighter fluid, Gatorade, and more! If it negatively affects the mere mortal yeast cell, then it will likely do the same to humans, dogs, cats, or any other cellular respiring organism!

The fun of this lab (with great respect for any yeast that may have been harmed during the course of this investigation) is that students get to pursue their own line of inquiry; and to own the process as a result.

Specifically, I noted the following attributes in this student's lab design: 

The student correctly completed all aspects of the template and did so with very few errors. At this point we have used this for approximately ten labs throughout the year therefore I was quite hands-off in its use but one can clearly note the excellent detail in scripting and anticipating each member's roles; thus there are accountability measures not only for student-teacher but student-student.

Since this lab is unique for each team there was no possibility to repeat trials which makes this a bit different than in previous instances. I recommended that groups might choose to team up to establish some repeatability but this did not occur. But that's OK, too.

The only notable mistake was by erroneously naming Gatorade as the manipulated variable rather than the correct MV (lemonade).

  Of Yeast and Men...
  Routines and Procedures: Of Yeast and Men...
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Population Explosion (Yeast Lab) (Day #1 of 3)

Unit 7: 7) Ecology ("Population Interactions")
Lesson 1 of 16

Objective: Students will plan and conduct a laboratory investigation that tests the effect of an abiotic or biotic factor on the size of a population of yeast cells.

Big Idea: Populations are able to produce populations of infinite size, but the environment (and its resources) is finite.

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7 teachers like this lesson
Science, Populations and Ecosystems, Ecology, cause and effect, asking questions, investigation, Math & Computational Thinking
  55 minutes
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