If you are searching for a course that could help you improve your mathematics skills and ability to perform calculations fluidly, then this is the one which will train you to do so. This course is provided with downloadable resources which are actually worksheets to give a better practice. This course will help you master the use of abacus and eventually train you to do calculations without any equipment (pen,paper,ABACUS) in real life problems.
Don`t judge this course by it`s duration because it provides downloadable resources (practice questions) which you have to practice other than the video lectures. What I feel is; you don`t need to invest much of your valuable time in watching videos because the abacus method works on only three simple rules and rest are it`s variations ,so, this course is designed keeping this point in mind which will take just few minutes from your schedule to develop your skills.