  In the context of the European Erasmus+ project Teaching ASTronomy at the
Educational level (TASTE), we investigated the extent to which a learning
module at school and a set of activities during a planetarium visit help
students to gain insight in the Apparent Motion of the Sun and Stars.
Therefore, we have set up a two treatment study with a pretest posttest design.
In the four participating countries (Belgium, Germany, Greece and Italy),
secondary school students studied the concept of the celestial globe at school
using newly designed learning materials. By using a latent class analysis, we
identified different classes of student answers on the AMoSS test. We show how
students evolve from one class to another between pretest and posttest. Overall
the results of the pretest and posttest show that a good understanding of the
different aspects of the apparent motion of celestial bodies is difficult to
achieve.
