Relating the Fahrenheit and Celsius scales
Relating the Fahrenheit and Celsius scales
A POGIL Laboratory and Workshop Activity
Teacher Handout
Content goal:
• Students should be able to use a linear graph to determine the relationship between two temperature scales
Process goal:
• Students should be able to use the TI-83 calculator to graph and analyze a linear relationship
• Students should be able to convert between one temperature scale and another
Time
You have many options, but here is my suggestion:
50 minutes per day
Lab ( 1 period
POGIL ( 1 period
Critical thinking questions
and extensions ( 1-2 periods
110 minutes per day
Lab and POGIL ( 1 period
Critical thinking questions
and extensions ( 1 period
Laboratory
Materials: You will need the following per group of 4:
1 Styrofoam coffee cup
1 hot plate
1 thermometer marked in degrees Celsius
1 thermometer marked in degrees Fahrenheit
Ice, a few cubes per group
Access to water
Fahrenheit thermometers are a little hard to come by. You can order them from
If you have Vernier probes, you can hook up two thermal probes at once, and set one to read in Fahrenheit and the other in Celsius. If you set this up ahead of time most of your kids won’t realize that the calculator is just doing the conversion internally.
POGIL
You have many options here.
• You could have the students graph the data by hand if you prefer or don’t have access to TI-83 calculators.
• You can also use this activity as an introduction to random and systematic error. If you can compare mercury and alcohol thermometer this can be quite interesting.
• You could have the students invent their own temperature scale and name it for themselves. In this case you might want them to base it on some other two observable phenomenon This helps drive home the point that temperature is arbitrary, which can lead into a nice discussion about what heat really is.
A couple of interesting temperature points to use:
( Boiling point of nitrogen, 77 Kelvin
( Normal body temperature 37 oC
( Freezing of methane (182 oC, boiling (162 oC (methane is the principle
component of the Neptune atmosphere
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