Abstract
In the chapter we are dealing with the investigation of the role of non-verbal elements of didactic tests in secondary chemistry education and with cnsequences for adequate teachers' preparation. For solving this task there was used the comparison of the results of pupils of basic school performing two variants of the test with the same content and different formulation and arrangement of items (verbal form and form comprising visual information (pictures and graphs)).
In the contribution are described selected results and interpretation obtained experimental data. Results are gained from the point of view of the typology of picture material as a part of didactic tests and from the point of view of the attitude of the students of chemistry teaching to the influence of graphical elements to the fruitfulness of students in didactic tests.