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TfU Picture of Practice: A Year of 8th Grade Science with Bill McWeeny
A Year of 8th Grade Science Contents

Implementing The Cell Unit: The Cell Lab

The Animal and Plant Cell Lab
Students prepare cheek and onion skin cell slides. During the lab students are expected to find diagrams of plant and animal cells and label their own diagrams as best as possible.

Why is it important to see animal and plant cells? When students see their own animal cells, they begin to see how much the study of the living cell in Biology relates to them. They can then more easily start thinking about components of cells and how these components might function together to perform the basic life processes. Viewing an onion cell helps them see the similarities and differences between animal and plant cells.

Materials & Resources Implementation General Tips/
Obstacles to Expect
  1. Microscopes (400 power resolution)
  2. Microscope slides and covers
  3. Onion skins
  4. Plant cell diagrams
  5. Animal cell diagrams

Students view animal cells by scraping their own cheeks (as described by the instructor) and placing the slide under the 400 resoluation microscope.

Students view plant cells by viewing onion skin under the microscope.

See the story of how Mr. McWeeny implements this unit. The assignments, student work, reactions and assessment are displayed.

Students sometimes label parts that are not visible with a four hundred power lens -- leave those details for correction until later in the unit.

Cell Diagrams should be easily accessible for student reference throughout the lab.

Useful Assessments:

  • Self Assessments
  • Peer Assessments
  • Teacher Assessments

Next Steps:
 
A Year of 8th Grade Science Contents

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