Saturday, October 13, 2012

Life Science, Week 3

Cells

We're gearing up for a lengthy study of the human body. This week, Tessa learned about cells by taking a look at a rather large example that can be seen without a microscope!


Thursday


Friday

  • Read Greg's Microscope by Millicent E. Selsam.
  • Completed RSO Cell Lab #1: An Egg is a Cell.
This was a great quick and easy lab that provided some basic hands-on knowledge of one special type of cell. Next week, we'll dip our toes a little deeper.

Tessa inspected the tiny holes of an egg shell. These holes allow air and water in and out of the cell.
Tessa inspected the tiny holes of an egg shell. These holes allow air and water in and out of the cell.

After comparing her lab diagram to a real egg, Tessa labeled and colored its parts.
After comparing her lab diagram to a real egg, Tessa labeled and colored its parts. 

My sister provided home-raised eggs for this lab. As a bonus, we cracked open an immature egg that one of her chickens laid a wee bit too soon (on left). Tessa correctly deduced that no chick could have hatched from this egg because it lacked its cell parts (yolk and blastodisc).
My sister provided home-raised eggs for this lab. As a bonus, we cracked open an immature egg that one of her chickens laid a wee bit too soon (on left). Tessa correctly deduced that no chick could have hatched from this egg because it lacked its cell parts (yolk and blastodisc).

* RSO = R.E.A.L. Science Odyssey

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