Paper Title
Practical Lessons of Chemistry at Secondary School

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.