People can gain insight into modern-day problems by observing environmental changes systematically.
The time of sunrise and sunset, measured in Universal Time, can determine the longitude of the person making the measure. Scientists work in a very methodical fashion. Maintaining accurate records of observations and measurements is a key component in this systematic method. Every student should keep accurate chronological record, possibly in a scientific investigations journal or science lab book, of everything which they do in the investigation. These notes should be placed within the student's portfolio for assessment purposes.