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The play scripts for Catherine the Great's expedition carried out by Gmelin were exciting. I was looking for the following, as I explained in class:

1. You put in your own personality in a creative way. This was very obvious from the scripts I saw. A few did not provide scripts but it is not too late.

2. I was looking to see if you knew that the thermometer would not be valid if the mercury had frozen before -84.4C Most you got this.

3. I was looking to see if you knew that finding the mercury freezing point might help in finding the real temperature when the thermometer read -84.4C. Very few worked this out.

4. Some people thought that Gmelin and Catherine the Great might be alive 50 years later when Thomson discovered the freezing point of mercury problem. It is likely they would have died then. Well done to those who thought this.

5. Next steps: a) you may look up the scientists on Google, or similar. b) always note the years of birth and death.

John