  The goal of this paper is to present three proposal of didactics sequence
with astronomical thematic taking alignment with BNCC. They were developed
during the work plan progress of students of high school connected with OAIG.
As a final result of the students practices, they: (1) determined the mass of
Jupiter by Io eclipse; (2) recognized crateras and seas of the Moon; and (3)
constructed the H-R diagram for the near stars.
