Hello my friend, Professor Ahmed is a physics and computer science teacher for more than 19 years, during which I taught all branches. I have students from different countries of the world, most of them from America, Canada, Australia, Turkey, Saudi Arabia, Qatar, Bahrain, the Sultanate of Oman, and Kuwait, with whom I achieved excellent results and they are still continuing with me. I did not understand the nature of the work. Please contact me to find out the nature of the job: explaining, solving assignments, or solving an exam waiting for your communication