Science

While Science, Technology, Engineering, and Math (STEM) fields have increased in importance over the past decade, minorities have remained traditionally underrepresented in these fields. In this study we seek to better understand some of the factors that might contribute to or potentially mitigate early STEM pipeline leaks, specifically, high school graduation and college entrance leaks. Student interest formed in the early school years has an impact on future course selections and persistence in school. These choices can have long-term repercussions on the future career options and the financial security of students. We apply expectancy-value theory (EVT) in order to examine the factors that may influence students’ motivations and intentions to complete high school and attend college. Specifically, we investigate if EVT can help to explain change in students’ academic intentions and motivations after a computing intervention. We hypothesize that changes in students’ expectancies for success and subjective task values will be positively associated with changes in students’ intentions and motivations to persist in academia. Data were gathered from a sample of elementary students within an urban, high poverty, and predominately minority school district located in the southeastern USA. Changes in students’ expectancies for success and subjective task values over the course of the intervention played an important role in students’ academic motivations and intentions to both finish high school and attend college. These findings demonstrate that EVT is useful in explaining general academic motivations in young children, which could potentially increase the structural integrity of the STEM pipeline.

Though addressing sources of uncertainty is an important part of doing science, it has largely been neglected in assessing students' scientific argumentation. In this study, we initially defined a scientific argumentation construct in four structural elements consisting of claim, justification, uncertainty qualifier, and uncertainty rationale. We consulted literature to characterize and score different levels of student performances on each of these four argumentation elements. We designed a test comprised of nine scientific argumentation tasks addressing climate change, the search for life in space, and fresh water availability and administered it to 473 students from 9 high schools in the United States. After testing the local dependence and unidimensionality assumptions, we found that the uncertainty qualifier element was not aligned with the other three. After removing items related to uncertainty qualifier, we applied a Rasch analysis based on a Partial Credit Model. Results indicate that (1) claim, justification, and uncertainty rationale items form a unidimensional scale, (2) justification and uncertainty rationale items contribute the most on the unidimensional scientific argumentation scale as they cover much wider ranges of the scale than claim items, (3) average item difficulties increase in the order of claim, justification, and uncertainty rationale, (4) students' elaboration of uncertainty exhibits dual characteristics: self-assessment of their own knowledge and ability versus scientific assessment of conceptual and empirical errors embedded in investigations, and (5) students who can make warrants between theory and evidence are more likely to think about uncertainty from scientific sources than those who cannot. We identified limitations of this study in terms of science topic coverage and sample selection and made suggestions on how these limitations might have affected results and interpretations.

This qualitative study examined how and why research experiences for teachers (RETs) influenced middle and high school science teachers’ beliefs, attitudes, and values about teaching science as inquiry. Changes teachers reported after participating in the RET ranged from modifying a few lessons (belief change) to a comprehensive revision of what and how they taught to better reflect inquiry (attitude change). Some teachers who described comprehensively changing their instruction also described implementing actions meant to change science education within their respective schools, not just their own classrooms (value change). We present how and why teachers went about changes in their practices in relation to the researcher-created teacher inquiry beliefs system spectrum (TIBSS). The TIBSS conceptualizes the range of changes observed in participating teachers. We also describe the features of the RET and external factors, such as personal experiences and school contexts, that teachers cited as influential to these changes.

An electronic teacher guide (eTG) was developed to determine whether a digital guide could better support teachers in implementing an inquiry-based curriculum and in enhancing their practice. Developed as a proof-of-concept exemplar, features of the eTG support high school teachers in planning, implementing, and modifying innovative instructional materials and in developing more ambitious teaching practices.

This brief gives an overview—and by no means a comprehensive one—of several NGSS-aligned projects in the areas of curriculum, instruction, assessment, and professional development.

No one curriculum can meet the needs of all students and teachers. This video describes why a teacher might want to modify a curriculum and how he or she would go about it.

"Content coherence"--ideas presented in a connected, sequential way--plays a big role in effective science instruction. Watch this video to find out how it works and how students benefit!

An effective curriculum helps you support students' science learning, understanding, and achievement. But what does "effective" mean? This video gives you the inside scoop on what makes a curriculum effective and flags some common pitfalls to avoid.