In this unit students are given an opportunity to ask questions, do research on the topic by looking up information (on the Internet, interview with experts), process the information, present the result of their work and answer questions of their peers.

They have an opportunity to organise their work, model a scientific conference, role-play work of experts and that of reporters and journalists. In the interview with haematological center staff, students become familiar with conditions of blood donation and with necessary instruments.

Reciprocal collaboration of students is required in planning and performing of a short interview. In this interview students have to explain the substance of the issue by asking questions and giving answers in a way that helps to explain the importance of blood donation to common people. They are further required to propose a model of sedimentation and blood type determination, test these models and make conclusions based on their observations.

All proposed activities provide an opportunity to broaden and deepen knowledge of human blood, its properties and its functions. Students are guided to think about and discuss development of biology and technology, possibility of substituting of human blood by artificial blood for medical purposes in the future, and think about completeness of this substituent.