No matter how much you know,you still need to learn,and no matter how knowledgeable you are, do not forget that there is thhe Knower. Teaching is an art and a hobby, here I was a great help to a group of students at different levels and in scientific subjects, very practical, especially physics andmathematics, I can simplify concepts and make them seem easy by bringing problems to daily life, I hope to be a reason for guidance and education for all Who would like to share with me minutes of their precious time, which will not be free of course,but I guarantee the quality according to the price.