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Teaching Classification/Diversity of Life in Middle School Life Science

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Anna Bahnson Anna Bahnson 1600 Points

 
Hi All,
I'd love to hear teaching ideas from those of you who teach classification in life science.   I teach in Georgia and below is how our standards are written.  We have struggled as a team to develop meaningful sequencing that focuses less on memorizing bits and pieces of information and more on conceptual understanding.  We have also struggled to decide how much time to dedicate to this topic.  For example, do we do a broad overview of the six kingdoms or do we do mini-units for each kingdom?  Thanks for your ideas and help!  

Anna Bahnson
7th Grade Life Science

Georgia's standard for classification/diversity of life:
S7L1.  Obtain, evaluate, and communicate information to investigate the diversity of living organisms and how they can be compared scientifically.

A.Develop and defend a model that categorizes organisms based on common characteristics.
 
B. Evaluate historical models of how organisms were classified based on physical characteristics and how that led to the six kingdom system (currently archaea, bacteria, protists, fungi, plants, and animals).

(Clarification statement: This includes common examples and characteristics such as, but not limited to, prokaryotic, eukaryotic, unicellular, multicellular, asexual reproduction, sexual reproduction, autotroph, heterotroph, and unique cell structures. Modern classification will be addressed in high school.) 

Amanda Wolfe Amanda Wolfe 16375 Points

Hi Anna, Great post here. I think a lot of teachers struggle with how to help build context and meaning around classification with out it becoming a memorization game. There is a lot of opportunity for Claim Evidence Reasoning argumentation in classification and I have a couple of resources that might be helpful in crafting your unit. I was privileged to work with a neuroscience graduate student, (now Dr. Jauvinett!) from UCSD in a year long program and she and I developed and tested out some awesome lessons that our students were highly engaged in. In particular you might find the lesson "Evolutionary Brains" a nice entry event lesson to meet the standard of developing and defending a model based on common characteristics. if you can borrow brains from a local museum or university it really gets the students over the moon excited! Here is the link to download the resources: [url=https://docs.google.com/forms/d/e/1FAIpQLSd-DqNwgDtW7xNkJ8aZbjFkjRN3nMXYrFCKfdHWpB9XbrJDDw/viewform?fbzx=2345868470360728182]https://docs.google.com/forms/d/e/1FAIpQLSd-DqNwgDtW7xNkJ8aZbjFkjRN3nMXYrFCKfdHWpB9XbrJDDw/viewform?fbzx=2345868470360728182[/url] And here is the description of the lesson:[url=https://ucsdneuro.files.wordpress.com/2014/04/teachertraininglessonplan_april2014.pdf] https://ucsdneuro.files.wordpress.com/2014/04/teachertraininglessonplan_april2014.pdf[/url] For the other standard that addresses the 6 kingdom model you could do something similar with printed visuals/descriptions and have the students come up with a rational based on evidence for how to group them. I feel like pond water protists might be a phenomenal organism to create some disequilibrium in how to classify organisms once they have the other kingdoms figured out. I did a quick search in the NSTA Learning Center and I came across another lesson on classification that I can not resist sharing considering the recent Pokemon Go phenomenon -[url=https://learningcenter.nsta.org/resource/?id=10.2505/4/ss06_029_04_36] https://learningcenter.nsta.org/resource/?id=10.2505/4/ss06_029_04_36[/url] I excited to hear how things go this year. Please come back and post your reflections! Does anyone else in the community have some tried and true methods for adrressing these standards?

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