This course deals with an important topic that is neglected in the traditional mathematics curriculum: how to guess and estimate the answers to math problems. You will learn, for example, how to estimate the size of the diaper market in the United States, how to estimate the surface temperature of planets in the solar system, and how to estimate many definite integrals.
This course requires a knowledge of calculus. If you are familiar with Taylor series, you know enough to take this course.
To find out if you want to take this course, download the textbook of the same name, which the instructor graciously makes available for free. If you enjoy the textbook, you will enjoy the course. One advantage of the course is that it provides insightful solutions for many of the problems in the textbook.
The course materials consist of excerpts from the textbook, short video lectures, and problems with solutions that are revealed after you submit your answers. The instructor interacts with students by responding to some of the questions and comments posted in the discussion forum.
The course materials are comprehensive enough that you can take the course without reading the textbook. The instructor does not require or even encourage you to read the textbook, but I found it quite valuable.
The material is difficult, but it is easy to get a certificate, because grading is very lenient.
I do not know if or when this course will be offered again.