Student in Master 2 Condensed Matter and Nanomaterials, I propose to share my knowledge acquired throughout my course and especially in mathematics, and physics and chemistry. The objective will be to fill in the gaps refurbishment to remedy and build a solid base in the desired subject, I will be able to put myself in the place of the student to detect the difficulties and offer him a means that will suit him to assimilate all the concepts thus the support of the student for the preparation of the final exams and the homework for all levels ....