Textbook in PDF format The primary aim of the book entitled "Teaching biology - Photosynthetic Organisms" is to support practice-oriented teaching of biology, therefore it includes detailed descriptions of illustrated investigations and experiments alongside basic theoretical knowledge. In line with contemporary requirements, these are complemented by digital aids, such as interactive test exercises. This makes the book a useful tool for not only making observations and carrying out experiments, but also for classroom activities and independent learning. The wide range of exercises can provide a good basis for preparing for competitions and for activities that focus on the independent research work of students