Within the project the content of selected indicators in educational Standards for basic education in biology and chemistry was elaborated into problem tasks on three levels of difficulty. Every task was completed with a methodical comment which offers teachers basic information about how to work with a particular task.
The conception of the tasks accents development of scientific literacy and enables to variegate science education. At the same time, it offers one of the possible tools for identifi cation of educational aims in terms of curricular frame fulfilment.
The tree levels of diffi culty enable teachers to give their students tasks according to their individual abilities and skills.