Standard 3200-03 Students will understand structure and function of cells and organisms.

Objective 3200-0302

• Investigate cellular structures and functions
• compare and contrast various cells

Intended Learning Outcomes:

• 1a. Make observations and measurements (uses instruments as appropriate).
  
• 1b. Develop and use categories to classify observations.
  
• 1d. Make estimations and predictions based on observations and current knowledge.
  
• 2e. Analyze data and draw warranted inferences.
  
• 4b. Understand how technological advances have influenced the progress of science, and how science has influenced developments in technology.
  
• 5b. Know basic science facts appropriate to grade level.
  
• 5c. Understand science concepts and principles.
  
• 6g. Evaluate the findings and conclusions reported by other investigators using relevant and defensible criteria.
  
• 7c. Understand that all science is based on observation of natural phenomena, but that all observations are influenced by the observers' prior knowledge, experience, and theoretical perspective.

The background information about individual cell parts and their functions found prior to this in sci-ber text is all that is needed for this lab!

Summary:

• Students will observe an assortment of microscope slides (Prepared Slides are the best), and identify each as either Plant or Animal Cell.
  
• Students will then explain why they have identified each as a "Plant" or an "Animal".

1)Students identifying cells by using individual microscopes.

2)Students identifying cells from a video screen linked to a "flex cam" attached to microscope and slides.

3)Students identifying cells from a video screen linked via computer to Cell Photograph page.

4)Students identifying cells from printed copies from the Cell Photograph page which is available as either a .htm or .pdf file (requires Adobe Acrobat).

Lab Option #1	Lab Option #2
*Microscopes *Slides *Coverslips *Plant cell samples (root tips are best) *Animal cell samples such as : Skin/Nerve/Muscle/Cartilage *Stains (Iodine, Methylene Blue etc.) *Water droppers *Aprons *1 answer sheet per student .html file or .pdf file (requires Adobe Acrobat)	*Microscope *"Flex cam" *T.V. Or Video with "S-Video" Attachment *Plant/Animal Tissues or slides *1 answer sheet per student .html file or .pdf file (requires Adobe Acrobat)
Lab Option #3	Lab Option #4
*6 cells from video screen linked to computer using Cell Photograph page. *1 answer sheet per student .html file or .pdf file (requires Adobe Acrobat)	*6 prints of cells available as either a .htm or .pdf file (requires Adobe Acrobat). *1 answer sheet per student .html file or .pdf file (requires Adobe Acrobat)

Procedure:

• Obtain 6 different samples of cells from your teacher -- either video references, pictures or actual cells from tissues of plants and animals.
  
• Observe them for the characteristics that distinguish plant from animal cells
  
• On your answer sheet (.html file or .pdf file )draw what you see on the circle provided (options 1-3)
  
• Label it as either Plant or Animal Cell.
  
• Explain why you have chosen the answer you have, based upon differences between Plant and Animal cells you have learned about.

Safety concerns:

Teachers and students, be sure to keep all Glass, Animal, and Sharp instrument Safety Rules that are specified by the teacher and in all general laboratory experiences.