<![CDATA[The IITSSL is an interdisciplinary thinking assessment rubrics for science teacher candidates in a science lesson plan. The IITSSL rubric was developed and qualitative evaluated in three phases: rubric design, first and second pilot tests. The qualitative evaluation during three phases with novice-expert interviews was carried out in four science education classes at three different universities. The rubric development result of the IITSSL rubric with dimensions are objective, disciplinary grounding, integration, and critical awareness in a component science lesson plan are learning objectives, instructional activities, and assessments with valid categories of content validity and fair ICC (0.637) reliability. Evidence of novice and expert validity of the IITSSL rubric from the results of interviews with novices and experts, which in general are meaningful according to the values of validity and reliability. The IITSSL rubric with four dimensions and ten criteria as items is very simple, easy to use, and can in fact detect pupils' capacity for interdisciplinary thinking with accuracy and reliability. in science lesson plans in a range of course settings. The science teacher candidates appear to comprehend the importance of interdisciplinary thinking according to their experience of the science lesson plan coursework and the IITSSL rubric. The IITSSL rubric not only measure understanding of interdisciplinary thinking, but is likely to promote a more integrated method of knowledge how science teacher candidates solve real word problems]]>
