Research of using mathematical principles in chemistry is leading us to creation of materials and resources that will support this interdisciplinary approach to education. The effectiveness of created materials is verified in secondary schools.
An extensive testing in chemistry conducted among secondary school students in 2015 and the interviews with the teachers of chemistry and mathematics are the main sources for the ideas. Students have many difficulties in chemical tasks with logical thinking, interpretation of data and statistical evaluation, spatial imagination and calculations.
The paper presents solutions of these problems in a form of interdisciplinary tasks.