Measurement is used in all aspects of daily life, as well as in such fields as engineering, architecture, and medicine. We measure things every day. This morning you may have weighed yourself, poured two cups of water into the coffeemaker, checked the temperature outside to help you decide what to wear, cut enough gift wrap off the roll to wrap a present, decided on the size of a storage container for some leftover food, noted on your car's odometer how far you'd driven, monitored both your car's traveling speed and its gas gauge, and kept an eye on the time so that you wouldn't be late.
All of the situations above are easily identifiable as measurement situations. Yet what is at the heart of all of these comparisons? In other words, in order to measure, what must we consider, and then what steps must we take? Note 2
To begin thinking about measurement, you will use, of all things, a rock.