Quantities+and+relationships

What is the object of study of our course? What will be interested in this year? We begin year by exploring quantities, those that are measurable and those that are computed. What is a quantity? One of possible definitions: // Quantities are conceptual entities that exist in people’s conceptions of situations. A person is thinking of a quantity when he or she conceives a quality of an object or event in such a way that this quality is measurable or countable. A quantity is composed of an object, a quality of the object, an appropriate unit or dimension, and a process by which to assign a numerical value to the quality. // [|Qualities_quantities.docx] media type="custom" key="6739467"

Students give examples of quantities: list qualities of experiences that can be measured or counted as opposed to ones that cannot, but rather have to be computed. Are all measurable? How do the examples differ? Calculated -- how are they calculated? How quantities depend on each other? How do changes in some influence changes in others? From the list they have describe which quantities depend on others and describe the dependence.