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The time lag between the progresses in the area of molecular biology reached in the last years and the schools science curricula  can be reduced through  initiatives of the university  regarding  the dissemina- tion of sciences. Inside of this context, one of the major objectives of the CBME has been the scientific education  and  dissemination on Molecular  Biosciences.  Among the  strategies organized  to promote the dissemination of this area, the Scientific Dissemination Coordination of CBME developed a set of playful activities  for students from public and private  elementary schools (7th  and 8th grades).  As a first step science teachers were interviewed  in order to indicate  which topics related  to molecular bio- sciences they  usually  include in their curricula  planning.  The approach  considered  in the elaboration of the set of activities  was the construction of knowledge of the concepts related  to topics as cell types, their  structures and  organelles,  and  the  importance of the  nucleus and  DNA. The set was offered to170 students. Students from private  schools were evaluated by their  performance  through  the classes, which were registered  by the  notes  of the  instructors.  Students from public  schools were evaluated through  questionnaires containing  basic  concepts  on the  theme  applied  before (pre-test) and  after (post-test) the set of activities  in order to measure,  respectively,  the previous and acquired knowledge. The  programming accomplished  at  the  public  school was partially modified  due  to  the  absence  of a laboratory, microscopes  and  a room  of computers, without, however,  to  alter  the  objectives  and content of the  activities. The  comparative analysis  of the  pre- and  post-tests revealed  that, in this latter, there  was an increase of the average percentage  of correct  answers and an improvement on the elaboration of the  answers.  These  results  assure  the  efficiency of the program  and  the  methodology used.  The students considered the organization, contents and methodology  employed in the course as being satisfactory. Support  by CNPq  and FAPESP

Set of Activities Addressed for Elementary School Students: Cells and the Genetic Material