This textbook is an outgrowth of a first-year course I have been teaching at Yasar University in Izmir. It is a somewhat nostalgic course for me, since as a young student back in the early 1970s, I took what was then called Engineering Sciences ES 100. There, the instructor told us about computation using a slide rule. The course was very informative. Our instructor was knowledgeable and entertaining. It provided a nice introduction to life as an engineer. I truly understood for the first time such concepts as accuracy, computational effort, modeling, approximation, order of magnitude, and error terms. Then, again, at the start of graduate school, I had a most insightful professor, who made an indelible impression upon me – not only concerning computation, but about life itself. Here, I wanted to duplicate my exposure to computation and life as an engineer, with a bit of focus on industrial engineering.