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This book is the result of research, thus compile the mathematical knowledge required by researchers in mechanics, physics, engineering, chemistry and other branches of application of mathematics for the theoretical and numerical resolution of physical models on computers. The advent of large computers has in the meantime revolutionised methods of computation and made this gap in the literature intolerable: the objective of the Handbook is to fill just this gap. The book also investigates conditions and factors that affect preservice teachers’ decisions to use handheld computers in scientific investigations and explores aspects of student learning and classroom practices that would be affected by handheldbased science activities. Current trends in educational reform require teachers to be proficient in science and technology. The unique nature of handheld technology allows for almost seamless integration of technology in a learning environment, and this requires professional preparation. The book also investigates under what conditions preservice teachers make decisions about handheld technology integration, and how this integration enhances inquirybased instruction in a science methods course and affects their attitudes and feelings of selfefficacy.