Hi, im Lahcen, certified teacher of mathematics in high school since 2014, i teach mathematic program for students (15 to 18 years old), also had a short experience with college students (12 to 15 years old). my services includes but not limited to: * some mistakes in exercices reveals that we form wrong ideas about a mathematic concept: i can introduce this concept (limits, derivation,...) for a better understanding * create exercices and situations that fits to you and fill the emptiness * help you do homework and prepare for exams *for previous lessons: upgrade and revision ...