Paper Title
Practical Lessons Of Chemistry At Secondary School

Abstract
Chemistry is a practical science, so the great part of teaching and learning includes experiments and demonstrations. In this paper lessons on which any kind of demonstration or experiment takes place is called �practical lesson�. Practical part of subject is important for increasing as understanding of subject but also for the motivation of further learning outside the school and for choosing chemistry as a future career. Well organized practicum at class is a basis of success in these challenge. In this paper class organization types are introduced due to teacher�s goal, class size, students� educational back-ground. These types of lesson are: demonstration, laboratory work and chemical experiment. Also advantages and limitations for each organization type are discussed. Keywords- Chemistry At School, Reaction Demonstrations, Class Organization Types, Chemical Experiment At School, School Laboratory.