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7th Grade Science

Mr.Kang's Classroom Log 

Wednesday, November 08, 2006

Monday 11/6/06

What was done?
  1. Mr. Kang was absent. Students worked on the "What are Joints?" Worksheet.
  2. Students took notes on the Eyewitness: Skeleton video.

What was collected?
  1. The answers to the Joints worksheet.

What was assigned?
  1. Completion of the video notes.

Daily Science Fact
A submarine (or a space ship, for that matter) is a sealed container that contains people and a limited supply of air. There are three things that must happen in order to keep air in a submarine breathable: (1) Oxygen has to be replenished as it is consumed. If the percentage of oxygen in the air falls too low, a person suffocates. (2) Carbon dioxide must be removed from the air. As the concentration of carbon dioxide rises, it becomes a toxin. (3) The moisture that we exhale in our breath must be removed.

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