CountInMind

Description of the work: This is when the author was in the senior grade of elementary school. At that time, the class teacher would read out several numbers in order to test the students' mental arithmetic sum. I believe that this kind of training method can help to improve calculation ability and concentration, so as to study. For science students, it can be regarded as establishing good arithmetic skills, and it will also help speed up the calculation process of mathematical problems. Without further ado, if you or your child wants to become a master of mental arithmetic, come and train as soon as possible; if you think you are already a master of mental arithmetic and you are focused enough, you should test your strength immediately.