Cells, Tissues, Organs, and Systems

Class Schedule

next time: do the onion cell in class 1, demoing completely first and then having table groups each make an onion cell slide. This is because it’s so much easier to see the onion cells etc. Then do cheek cell in class 2, do pond water as well for a later class

Class 1:

  • Give new unit heading: Cells, Tissues, Organs, and Systems
  • Show video entitled Assignment Discovery: Cells from Discovery Learning (watch just until 12:18 where they show a neuron but going until 15:02 is also ok — don’t watch the whole 24:40 though…)
  • List main points from the video: 1. Everything that is alive is made up of cells, 2. every cell is living
  • Quote from Antonie van Leeuwenhoek, the “Father of Microbiology”: This was to me among all the marvels that I have discovered in nature the most marvelous of all. No greater pleasure has yet come to my eye than these spectacles of so many thousands of living creatures in a small drop of water moving among one another.
  • Introduce the compound light microscope using Pg 9 of student text to guide intro notes. Focus first on its magnification capabilites by drawing a diagram of the eyepiece, body tube, arm, revolving nosepiece and objective lenses. Note how magnification works in eyepiece and objective lenses. (Do this while comparing the digital microscope to the student microscope to notice the minor differences)
  • Hand out and complete a microscope diagram using the SMARTboard, noting points about caring for the microscope
  • Get a volunteer to do a cheek cell swab and view it under the digital microscope for all to see on the SMARTboard (VIDEO review: preparing a cheek cell and onion slide), use Methylene Blue to stain the cheek cells (note: be careful with this dye! It gets everywhere so use kleenex to remove extra dye from slide before continuing)
  • Draw this cheek cell diagram in the notes, with a circle for the field of view, the magnification labelled, and any cell parts present. (more students can volunteer to provide cheek cells if more time remains).
  • Extra: show them the oil immersion of a 100X objective lens (see pictures below for comparison purposes) — VIDEO link: using the oil immersion

Mr G Cheek cell (1000X) before oil immersion

Mr G Cheek cell (1000X) with oil immersion

Class 2:

  • Review previous class
  • Parts of the microscope diagram
  • Notes: Caring for the microscope (students can provide points until all are mentioned)
  • Do cheek cell
  • compare Animal vs. Plant cells using cheek cells and onions (use google images, discuss organelles)
  • definition sheet 1 as extra if needed

Class 3:

  • Review previous class
  • Microscope quiz
  • Slide reviews for more practice, bring in pond water, look at prepared slides etc.
  • complete definition sheet 1

Class 4:

  • Review previous class
  • Intro to organelles
  • Slide reviews for more practice, bring in pond water, look at prepared slides etc.

Class 5:

  • Review previous class
  • Handout: the Incredible Megacell Game
  • Computer lab for The Incredible Megacell Game – LINK (~half class)
  • Other half of class to review answers:
  • resources for some parts: TEM – Transmission Electron Microscope,  LINK – How to use a centrifuge

Class 6:

  • Microscope measuring basics, introducing terms like micrometre, field of view, and numbers of fit (NOF)

Class 7:

  • Onion cell in salt vs pure/distilled water LINK — as an intro to diffusion/osmosis etc. –> incorporating field of view drawings with measurements etc.

Class 8: