Hot Under the Collar

In this Bowland assessment task, students consider two different methods for converting temperatures from degrees Celsius to degrees Fahrenheit. Students have to select a way of comparing the two methods, explore the effects of varying temperature, make accurate calculations and devise a method of deciding when the approximate method gives a value that is too high. They are then required to interpret their tables and graphs to help solve the problem and relate their findings to the original context. Teacher guidance includes concepts which may be discussed with students, examples of probing questions which may be useful and assumptions that students need to make when completing the task. The assessment guidance consists of a progression table detailing how students may improve in each of the key processes. The resource concludes with a number of examples of students' work, together with comments, probing questions and feedback.