Η περιπέτεια της τροφής μέσα στο ανθρώπινο σώμα: αντιλήψεις των παιδιών της Ε' τάξης του δημοτικού σχολείου για τη δομή και τη λειτουργία του πεπτικού συστήματος του ανθρώπου

Περίληψη

The purpose of this research was to detect students' conceptions about the structure and the function of the human digestive system. Seven primary schools, with 6 experimental classes and 5 control classes participated in this research. A written questionnaire was answered by the 118 (10-11 years-old) students before and after a nine-hour constructivist teaching intervention. The control groups (100 students 10-11 years-old) followed a traditional teacher-directed class and were pre- and post-tested using the same questionnaire. Before the teaching most of the students held not scientifically acceptable conceptions about the structure and the function of the digestive system and they did not know the association between digestive and circulatory system. After the intervention in the experimental groups the number of students holding scientifically acceptable conceptions was significantly increased, while in the control groups students' initial ideas resisted teaching and did not improve to more scientific one.