While the students reach in secondary sector then really the students become very serious as board exams few months ahead. First year they do revision of last three years what they have studied. In final year they do some new topic and new chapters. While studying physics they have advance study of Electricity, Reflection, Refraction, Electromagnetic induction etc. All chapters include a lot of numerical like electricity relation between volt, ampere and resistance; Relative resistance of parallel and series circuits; in reflection chapter student must know about diagram of image formation and formulation of spectrum. While teaching this light Chapter I make a complete chest of position of object, diagram of reflection in spherical mirror, position and nature of image. I have seen students get benefit with this chest. In chemistry now it is time to study organic Chemistry. I use to give simple trick to Know about isomerism and formation of chain reaction in Carbon Compound. By giving diagrammatic representation of loan pairs of electron students can easily do covalent or ionic bonding. In class of biology they study some new topics like reflex action, Cell division (Mitosis), Genetics etc. In monohybrid and dihybrid cross they come to know Puente square, Sex determination of human, while studying mitosis they study the characteristics and diagram side by side. In nervous system I always give them idea of spontaneous reflex action which is very useful in our daily life. They come to know the flow diagram of sequence of reflex action. Here also they study about natural resources, management of waste and various pollution which help a lot in their future life. In this way I enjoy teaching a bunch of fresh students every year.