PARAGRAPHAptly named, this unit manual reviews the mathematics science students need to know: algebra, trigonometry, vector analysis, proportions, statistics, graphing methods, units and conversions, scientific notation, significant figures, uncertainty, and the scientific calculator. Spatial analysis is the vital part of GIS. The concept of vectors is discussed. This is the opposite of a scalar , which is a quantity that only has magnitude and no direction. For position vectors 1 and 2,.