Chairperson, Graduate Committee: Peggy Taylor.Wilson, Suzanne Martell2013-12-182013-12-182013https://scholarworks.montana.edu/handle/1/2834This study measured the effect of student-designed inquiry on students' attitudes and their critical thinking skills. Surveys pre- and post-treatment were used to determine student attitudes. Students' inquiry reports were used to evaluate their written conclusions for a claim statement, data used as evidence and a logical connection to science models. Students made improvements in designing and interpreting their research and increased their positive attitudes toward learning science.enBiologyInquiry-based learningHigh school studentsProfessional PaperCopyright 2013 by Suzanne Martell Wilson