In cooperation with the biology teacher, a workshop was held in which fourth-grade students learned about the composition of blood. Of particular interest was the observation of blood vessels, blood smear and heart muscle under a microscope, as well as the creation of an improvised representation of the composition of this most important human body fluid. In the next stage, the emphasis was placed on the acquisition of content about blood groups and the way of their inheritance, where the students also tried their hand at determining blood groups using the educational set.
