This book presents a working understanding of mathematical structures within the context of Environmental Problems, loaded with examples, help, hints and reference material. It starts out with the basics that are followed by with simple research scenarios that are of direct use to the user. The subjects include Lake and Groundwater Hydrology, Bubble Identification, Turbulence Statistics, Physical Chemistry and Acid Rain, Statistics, and Matrices. Special features in the book include Maple input/output, manual and automatic editing of structures, data handling and interpretation procedures, "click-on" solutions, spreadsheet transfer between Maple and Excel, and "across the screen" digitization. The book refers to Maple V release 5.1 and higher versions as well as to Maple 6. Internet support is available in the form of reference commands, data and programs.