RESULTS AND DISCUSSION
Our research resulted in the verification of the hypothesis about the positive motivational and developmental effects of IBSE components on students gifted in science. Our research results are divided into four stages of design-based research. (See Research Methods):
(1) The first step of our design-based research was investigating the specific educational needs of gifted students. In the year 2011, we distributed a questionnaire with a representative sample of 15 students aged 15-18 from upper secondary schools who are gifted in science (Trnova, & Trna, 2012). Their giftedness was verified by a specialist pedagogical-psychological board and by the declaration of their teachers. We present (see Table 2) a part of the questionnaire results: a list of specific educational needs of gifted students indicated by more than 50 % of them.