This eReviewer (Educspace Reviewer)  course is a combination of (1)  hard copy reviewer,  (2) online and (3) offline learning. The hard copy reviewer contains all related formulas and concepts of the specific subject as well as sample problems at the end of each chapter. The online courses are recorded video lectures with emphasis on theories and principles. And the offline learning refers to the video solutions (purchase along with the eReviewer and saved in DVDs) which allows students to watch the solutions of sample problems found inside the hard copy reviewer. This reviewer package is specially prepared for students who wish to take the Engineering Board Exam, but of course, it can be used by students who are still in their academic years as supplementary material. There are approximately 850 problems with video solutions in the whole course. There are two parts in this eReviewer, the first one is practice problems using the traditional way of calculation and the second part is using Casio FX 991 ES Plus technique or reverse engineering process. Educspace highly recommends that students should learn and prioritize the traditional way due to its long term benefits and only use the calculator techniques to double check the answer . You can find the first part of this course at http://educspace.com/?course=engineering-mathematics-refresher-course For any comments and feedback, please contact feedback@educspace.com