In the United States, temperatures are almost always reported in degrees Fahrenheit. In Canada and Mexico as well as most other places in the world, temperatures are generally reported in degrees Celsius. Alternatively, make a puzzle of the information in the chart and ask students to put the information back into order. Most students will need to reason on the basis of prior knowledge to help them match up the groups. Ask them to use their graph to discover the formula for converting from one temperature scale to the other.
Few students feel comfortable with both systems of measuring temperature.
This activity will help students familiarize themselves with the two systems. You might want to add some other temperatures to the list to fit your needs. Students can then find the equation of the line, which gives a conversion formula.