Students

Improving Multi-Dimensional Assessment and Instruction: Building and Sustaining Elementary Science Teachers' Capacity through Learning Communities (Collaborative Research: Lehman)

The main goal of this project is to better understand how to build and sustain the capacity of elementary science teachers in grades 3-5 to instruct and formatively assess students in ways that are aligned with contemporary science education frameworks and standards. To achieve this goal, the project will use classroom-based science assessment as a focus around which to build teacher capacity in science instruction and three-dimensional learning in science.

Lead Organization(s): 
Partner Organization(s): 
Award Number: 
1813938
Funding Period: 
Sun, 07/01/2018 to Thu, 06/30/2022
Full Description: 

This is an Early-Stage Design and Development collaborative effort submitted to the assessment strand of the Discovery Research PreK-12 (DRK-12) Program. Its main goal is to better understand how to build and sustain the capacity of elementary science teachers in grades 3-5 to instruct and formatively assess students in ways that are aligned with contemporary science education frameworks and standards. To achieve this goal, the project will use classroom-based science assessment as a focus around which to build teacher capacity in science instruction and three-dimensional learning in science. The three dimensions will include disciplinary core ideas, science and engineering practices, and crosscutting concepts. These dimensions are described in the Framework for K-12 Science Education (National Research Council; NRC, 2012), and the Next Generation Science Standards (NGSS; NGSS Lead States, 2013). The project will work closely with teachers to co-develop usable assessments and rubrics and help them to learn about three-dimensional assessment and instruction. Also, the project will work with teachers to test the developed assessments in diverse settings, and to create an active, online community of practice.

The two research questions will be: (1) How well do these assessments function with respect to aspects of validity for classroom use, particularly in terms of indicators of student proficiency, and tools to support teacher instructional practice?; and (2) In what ways do providing these assessment tasks and rubrics, and supporting teachers in their use, advance teachers' formative assessment practices to support multi-dimensional science instruction? The research and development components of this project will produce assessments and rubrics, which can directly impact students and teachers in the districts and states that have adopted the NGSS, as well as those that have embraced the vision of science teaching and learning embodied in the NRC Framework. The project will consist of five major tasks. First, the effort will iteratively develop assessments and rubrics for formative use, using an evidence-centered design approach. Second, it will collect data from evidence-based revision and redesign of the assessments from teachers piloting the assessments and rubrics, project cognitive laboratory studies with students, and an external review of the assessments design products. Third, it will study teachers' classroom use of assessments to understand and document how they blend assessment and instruction. The project will use pre/post questionnaires, video recordings, observation field notes, and pre/post interviews. Fourth, the study will build the capacity of participating teachers. Teacher Collaborators (n=9) will engage in participatory design of the assessment tasks and act as technical assistants to the overall implementation process. Teacher Implementers (n=15) will use the assessments formatively as part of their instructional practice. Finally, the work will develop a community of learners through the development of a technical assistance infrastructure, and leveraging teacher expertise to formatively assess students' work, using the assessments designed to be diagnostic and instructionally informative. External reviewers and an advisory board will provide formative feedback on the project's processes and summative evaluation of the project's results. The main outcomes of this endeavor will be prototypes of elementary science multi-dimensional assessments and new knowledge for the field on the underlying theory for developing teachers' capacity for engaging in multi-dimensional science instruction, learning, and assessment.

Professional Development for K-12 Science Teachers in Linguistically Diverse Classrooms

This project will engage science teachers in a sustained professional development (PD) program embedded in an afterschool science program designed for a linguistically diverse group of English learners (ELs).

Lead Organization(s): 
Award Number: 
1813937
Funding Period: 
Tue, 05/01/2018 to Sat, 04/30/2022
Full Description: 

This project will engage science teachers in a sustained professional development (PD) program embedded in an afterschool science program designed for a linguistically diverse group of English learners (ELs). The project targets science teachers (chemistry, physics, biology, and earth science) who teach in a high school that includes refugees from Myanmar, Central America, and Africa. Roughly 20% of the students are classified as ELs, representing almost 20 different linguistic groups, including a variety of Asian, Spanish, and Arabic languages. The fundamental issue that the project seeks to address is the design of science learning environments to facilitate ELs' learning in linguistically diverse high school classrooms. Research on science education for ELs has recommended several effective teaching approaches, such as building on students' diverse and rich resources, engaging students in authentic science learning practices, and encouraging and valuing flexible use of multiple languages. However, previously most research has focused on teaching speakers of Spanish in elementary and middle school level science classrooms in which a majority of ELs speak the same language. Furthermore, while many PD programs supporting science education for ELs provide a short-term workshop and/or newly designed curriculum and curriculum guide, there is a lack of PD models that engage teachers in a sustained community of practice through collaboration between researchers and teachers.

The project's primary goal includes broadening participation with direct impact on 14 science teachers, who will impact over 2000 students, including over 450 ELs, during the project implementation period. The project provides a sustained model of the PD program which further impacts EL students of teachers who participated in the various phases of the project. The project has a potential to make an impact on ELs and high school science teachers of ELs in three different ways. First, by generating PD materials that include effective teaching materials and instructional practices for ELs, which can be used by other educators situated in similar educational contexts. Second, by giving presentations and publish papers that communicate findings of the project to academic communities. These outputs can impact other researchers who would like to design PD programs to foster ELs' science learning. Third, by implementing the developed and tested PD program in a larger scale. The implementation of the project will build capacity to conduct a larger PD project to impact more teachers and students. These anticipated outputs and outcomes will provide valuable resources for researcher and practitioners looking to support ELs' science learning and steps forward to equity. Finally, the project team and two cohorts of science teachers will co-design a school-wide science teacher PD to transform science teaching materials and practices of non-participating teachers.

A Practice-based Online Learning Environment for Scientific Inquiry with Digitized Museum Collections in Middle School Classrooms

This project will develop and study a prototype online learning environment that supports student learning via Engaging Practices for Inquiry with Collections in Bioscience (EPIC Bioscience), which uses authentic research investigations with digitized collections from natural history museums. 

Lead Organization(s): 
Award Number: 
1812844
Funding Period: 
Fri, 06/15/2018 to Mon, 05/31/2021
Full Description: 

There are an estimated 2-4 billion specimens in the world's natural history collections that contain the data necessary to address complex global issues, including biodiversity and climate. Digitized natural history collections present an untapped opportunity to engage learners in crucial questions of science with far-reaching potential consequences via object-based research investigations. This project will develop and study a prototype online learning environment that supports student learning via Engaging Practices for Inquiry with Collections in Bioscience (EPIC Bioscience). EPIC Bioscience uses authentic research investigations with digitized collections from natural history museums. The project team will create a curriculum aligned with the Next Generation of Science Standards (NGSS) for middle school students, emphasizing a major disciplinary core idea in grades 6-8 life science, Ecosystems: Interactions, Energy, and Dynamics. The project has three major goals: 1) Develop an online learning environment that guides students through research investigations using digitized natural history collections to teach NGSS life science standards. 2) Investigate how interactive features and conversational scaffolds in the EPIC Bioscience learning environment can promote deeper processing of science content and effective knowledge building. 3) Demonstrate effective approaches to using digitized collections objects for contextualized, research-based science learning that aligns to NGSS standards for middle school classrooms.

The project will examine how and when interactive features of a digital learning environment can be combined with deep questions and effective online scaffolds to promote student engagement, meaningful collaborative discourse, and robust learning outcomes during research with digitized museum collections. Research activities will address: How can interactive features of EPIC Bioscience help students learn disciplinary core ideas and cross cutting concepts via science practices through collections-based research? How can effective patterns of collaborative scientific discourse be supported and enhanced during online, collections-based research? How does the use of digitized scientific collections influence students' levels of engagement and depth of processing during classroom investigations? A significant impact of the proposed work is expanded opportunities for research with authentic museum objects for populations who are traditionally underserved in STEM and are underrepresented in museum visitor demographics (Title I schools, racial/ethnic minorities, and rural school populations). Research activities will engage over 1,500 Title I and rural students (50 classes across three years) in meaningful research investigations with collections objects that address pressing global issues.

CAREER: Supporting Elementary Science Teaching and Learning by Integrating Uncertainty Into Classroom Science Investigations

The goal of this study is to improve elementary science teaching and learning by developing, testing, and refining a framework and set of tools for strategically incorporating forms of uncertainty central to scientists' sense-making into students' empirical learning.

Lead Organization(s): 
Award Number: 
1749324
Funding Period: 
Fri, 06/01/2018 to Wed, 05/31/2023
Full Description: 

The goal of this study will be to improve elementary science teaching and learning by developing, testing, and refining a framework and set of tools for strategically incorporating forms of uncertainty central to scientists' sense-making into students' empirical learning. The framework will rest on the notion that productive uncertainty should be carefully built into students' empirical learning experiences in order to support their engagement in scientific practices and understanding of disciplinary ideas. To re-conceptualize the role of empirical investigations, the study will focus on the transitions between the experiences and processes students seek to understand, classroom investigations, evidence, and explanatory models as opportunities for sense-making, and how uncertainty can be built into these transitions. The project's underlying assumption is that carefully implementing these forms of uncertainty will help curriculum developers and teachers avoid the oversimplified investigations that are prevalent in K-8 classrooms that stand in stark contrast to authentic science learning and the recommendations of the Framework for K-12 Science Education (National Research Council, 2012). Accordingly, the project will seek to develop curriculum design guidelines, teacher tools, professional development supports, and four elaborated investigations, including sets of lessons, videos, and assessments that embed productive uncertainty for second and fifth graders and designed for use with linguistically, culturally, and socio-economically diverse students.

The hypothesis of this work is that if specific forms of scientific uncertainty are carefully selected, and if teachers can implement these forms of uncertainty, elementary students will have more robust opportunities to develop disciplinary practices and ideas in ways consistent with the Next Generation Science Standards (NGSS) (Lead States, 2013). Employing Design-Based Research, the three research questions will be: (1) What opportunities for sense-making do elementary school empirical investigations afford where we might strategically build uncertainty?; (2) How can we design learning environments where uncertainty in empirical investigations supports opportunities for learning?; and (3) In classrooms with sustained opportunities to engage with uncertainty in empirical investigations, what progress do students make in content understandings and the practices of argumentation, explanation, and investigation? The work will consist of three design cycles: Design Cycle 1 will involve two small groups of six teachers in adapting their curricula to incorporate uncertainty, then describe how students engage around uncertainty in empirical investigations. Design Cycle 2 will involve the same small groups in implementing and refining task structures, tools, and teacher instructional strategies. In Design Cycle 3, teachers and researchers will further refine lesson materials, assessments, and supports. The project will partner with one school district and engage in design research with groups of teachers to develop: (1) a research-based description, with exemplars of opportunities for student sense-making within empirical investigations at both early and upper elementary grades; (2) a set of design principles and tools that allow teachers to elicit and capitalize on sense-making about uncertainty in investigations; and (3) four elementary investigations elaborated to incorporate and exemplify the first two products above. These materials will be disseminated through a website, and established networks for supporting implementation of the NGSS. An advisory board will oversee project progress and conduct both formative and summative evaluation.

Measuring Early Mathematical Reasoning Skills: Developing Tests of Numeric Relational Reasoning and Spatial Reasoning

The primary aim of this study is to develop mathematics screening assessment tools for Grades K-2 over the course of four years that measure students' abilities in numeric relational reasoning and spatial reasoning. The team of researchers will develop Measures of Mathematical Reasoning Skills system, which will contain Tests of Numeric Relational Reasoning (T-NRR) and Tests of Spatial Reasoning (T-SR).

Award Number: 
1721100
Funding Period: 
Fri, 09/15/2017 to Tue, 08/31/2021
Full Description: 

Numeric relational reasoning and spatial reasoning are critical to success in later mathematics coursework, including Algebra 1, a gatekeeper to success at the post-secondary level, and success in additional STEM domains, such as chemistry, geology, biology, and engineering. Given the importance of these skills for later success, it is imperative that there are high-quality screening tools available to identify students at-risk for difficulty in these areas. The primary aim of this study is to develop mathematics screening assessment tools for Grades K-2 over the course of four years that measure students' abilities in numeric relational reasoning and spatial reasoning. The team of researchers will develop Measures of Mathematical Reasoning Skills system, which will contain Tests of Numeric Relational Reasoning (T-NRR) and Tests of Spatial Reasoning (T-SR). The measures will be intended for use by teachers and school systems to screen students to determine who is at-risk for difficulty in early mathematics, including students with disabilities. The measures will help provide important information about the intensity of support that may be needed for a given student. Three forms per grade level will be developed for both the T-NRR and T-SR with accompanying validity and reliability evidence collected. The Discovery Research K-12 program (DRK-12) seeks to significantly enhance the learning and teaching of science, technology, engineering and mathematics (STEM) by preK-12 students and teachers, through research and development of innovative resources, models and tools (RMTs). Projects in the DRK-12 program build on fundamental research in STEM education and prior research and development efforts that provide theoretical and empirical justification for proposed projects.

The development of the T-NRR and T-SR measures will follow an iterative process across five phases. The phases include (1) refining the construct; (2) developing test specifications and item models; (3) developing items; (4) field testing the items; and (5) conducting validity studies. The evidence collected and evaluated during each phase will contribute to the overall evaluation of the reliability of the measures and the validity of the interpretations made using the measures. Item models, test specifications, and item development will be continuously evaluated and refined based on data from cognitive interviews, field tests, and reviews by mathematics educators, teachers of struggling students, teachers of culturally and linguistically diverse populations, and a Technical Advisory Board. In the final phase of development of the T-NRR and T-SR, reliability of the results will be estimated and multiple sources of validity evidence will be collected to examine the concurrent and predictive relation with other criterion measures, classification accuracy, and sensitivity to growth. Approximately 4,500 students in Grades K-2 will be involved in all phases of the research including field tests and cognitive interviews. Data will be analyzed using a two-parameter IRT model to ensure item and test form comparability.

Networking Urban Resources with Teachers and University to Enrich Early Childhood Science (NURTURES) Phase II: Expansion and Evaluation

Building on successful prior work, this project simultaneously targets young children's teachers and families/caregivers in an effort to build both parties' capacity to promote student interest in science, technology, engineering and mathematics (STEM) learning.

Lead Organization(s): 
Award Number: 
1721059
Funding Period: 
Fri, 09/01/2017 to Tue, 08/31/2021
Full Description: 

Building on successful prior work, this University of Toledo project, Networking Urban Resources with Teachers and University to enRich Early Childhood Science (NURTURES): Researching the impact of teacher professional development and family engagement on PreK-3 achievement, simultaneously targets young children's teachers and families/caregivers in an effort to build both parties' capacity to promote student interest in science, technology, engineering and mathematics (STEM) learning. Teachers participate in a two-week summer professional development program and receive support across the school year in the form of individualized coaching and participation in professional learning communities. Families receive science inquiry packets (sent home from school) four times a year and attend community STEM events throughout the year. Inquiry packets and community events encourage science inquiry, discourse, and further exploration of key science ideas. Project participants will include 120 teachers, 2,400 PreK-3 children and over 7,200 family members in Ohio and Michigan.

Extending the initial NURTURES project, developed with NSF Math and Science Partnership funding, this follow-up project aims to: 1) Transform early childhood science teaching based upon Next Generation Science Standards (NGSS) to measurably increase student science, literacy, and math achievement, and 2) Engage families of PreK-3 students in science inquiry practices to measurably improve student science, literacy, and math achievement. A particularly important facet of this follow-up project is the research effort to parse and understand how each component (teacher professional development versus family engagement) impacts student learning. The project will use a randomized control group research design (RCT) to compare student achievement outcomes among three groups: Children whose teachers received professional development and family engagement activities, children whose teachers received only professional development, and a control group. The project will use standardized tests (the TerraNova Complete Battery) to measure impact on learning gains in science, mathematics, reading, and early literacy for children in grades K- 3. The Lens on Science assessment will measure science learning in preschool children. This project will result in an NGSS-based program for teachers and families that has been systematically tested and may ultimately be scaled up to an impact study and dissemination at a broad level.

A Partnership to Adapt, Implement and Study a Professional Learning Model and Build District Capacity to Improve Science Instruction and Student Understanding (Collaborative Research: Borko)

This project will work in partnership with the Santa Clara Unified School District (SCUSD) to adapt a previously designed Professional Learning (PL) model based on the District's objectives and constraints to build the capacity of teacher leaders and a program coordinator to implement the adapted PL program. The project is examining the sustainability and scalability of a PL model that supports the development of teachers' pedagogical content knowledge and instructional practices.

Lead Organization(s): 
Award Number: 
1720930
Funding Period: 
Sun, 10/01/2017 to Thu, 09/30/2021
Full Description: 

The Lawrence Hall of Science (the Hall) and Stanford University teams have previously developed and tested the efficacy of a program of Professional Learning (PL) which is focused on improving teachers' ability to support students' ability to engage in scientific argumentation. Key components of the PL model include a week-long summer institute and follow-up sessions during the academic year that incorporate additional pedagogical input, video reflection, and planning time. In this project, the Hall and Stanford are working in partnership with the Santa Clara Unified School District (SCUSD) to adapt the PL model based on the District's objectives and constraints, to build the capacity of teacher leaders and a program coordinator to implement the adapted PL program. This will enable the District to continue to adapt and implement the program independently at the conclusion of the project. Concurrently, the project is studying the adaptability of the PL model and the effectiveness of its implementation, and is developing guidelines and tools for other districts to use in adapting and implementing the PL model in their local contexts. Thus, this project is contributing knowledge about how to build capacity in districts to lead professional learning in science that addresses the new teaching and learning standards and is responsive to the needs of their local context.

The project is examining the sustainability and scalability of a PL model that supports the development of teachers' pedagogical content knowledge and instructional practices, with a particular focus on engaging students in argument from evidence. Results from the Hall and Stanford's previous research project indicate that the PL model is effective at significantly improving teachers' and students' classroom discourse practices. These findings suggest that a version of the model, adapted to the context and needs of a different school district, has the potential to improve the teaching of science to meet the demands of the current vision of science education. Using a Design-Based Implementation Research approach, this project is (i) working with SCUSD to adapt the PL model; (ii) preparing a district project coordinator and cadre of local teacher leaders (TLs) to implement and further adapt the model; and (iii) studying the adaptation and implementation of the model. The outcomes will be: a) a scalable PL model that can be continually adapted to the objectives and constraints of a district; b) a set of activities and resources for the district to prepare and support the science teacher leaders who will implement the adapted PL program internally with other teachers; and c) knowledge about the adaptations and resources needed for the PL model to be implemented independently by other school districts. The team also is researching the impact of the program on classroom practices and student learning.


Project Videos

2019 STEM for All Video Showcase

Title: Building District Leadership in Scientific Argumentation

Presenter(s): Coralie Delhaye, Emily Reigh, & Emily Weiss

2018 STEM for All Video Showcase


Project MAPLE: Makerspaces Promoting Learning and Engagement

The project plans to develop and study a series of metacognitive strategies that support learning and engagement for struggling middle school students during makerspace experiences. The study will focus narrowly on establishing a foundational understanding of how to ameliorate barriers to engaging in design learning through the use of metacognitive strategies.

Award Number: 
1721236
Funding Period: 
Fri, 09/01/2017 to Sat, 08/31/2019
Full Description: 

The project plans to develop and study a series of metacognitive strategies that support learning and engagement for struggling middle school students during makerspace experiences. The makerspace movement has gained recognition and momentum, which has resulted in many schools integrating makerspace technologies and related curricular practices into the classroom. The study will focus narrowly on establishing a foundational understanding of how to ameliorate barriers to engaging in design learning through the use of metacognitive strategies. The project plans to translate and apply research on the use of metacognitive strategies in supporting struggling learners to develop approaches that teachers can implement to increase opportunities for students who are the most difficult to reach academically. Project strategies, curricula, and other resources will be disseminated through existing outreach websites, research briefs, peer-reviewed publications for researchers and practitioners, and a webinar for those interested in middle-school makerspaces for diverse learners.

The research will address the paucity of studies to inform practitioners about what pedagogical supports help struggling learners engage in these makerspace experiences. The project will focus on two populations of struggling learners in middle schools, students with learning disabilities, and students at risk for academic failure. The rationale for focusing on metacognition within makerspace activities comes from the literature on students with learning disabilities and other struggling learners that suggests that they have difficulty with metacognitive thinking. Multiple instruments will be used to measure metacognitive processes found to be pertinent within the research process. The project will tentatively focus on persistence (attitudes about making), iteration (productive struggle) and intentionality (plan with incremental steps). The work will result in an evidence base around new instructional practices for middle school students who are struggling learners so that they can experience more success during maker learning experiences.

Integrating Chemistry and Earth Science

This project will design, develop, and test a new curriculum unit for high school chemistry courses that is organized around the question, "How does chemistry shape where I live?" The new unit will integrate relevant Earth science data, scientific practices, and key urban environmental research findings with the chemistry curriculum to gain insights into factors that support the approach to teaching and learning advocated by current science curriculum standards.

Award Number: 
1721163
Funding Period: 
Tue, 08/15/2017 to Wed, 07/31/2019
Full Description: 

This Integrating Chemistry and Earth science (ICE) project will design, develop, and test a new curriculum unit for high school chemistry courses that is organized around the question, "How does chemistry shape where I live?" The new unit will integrate relevant Earth science data, scientific practices, and key urban environmental research findings with the chemistry curriculum to gain insights into factors that support the approach to teaching and learning advocated by current science curriculum standards. The overarching goal of the project is to develop teacher capacity to teach and evaluate student abilities to use the practices of scientists and concepts from Earth science and chemistry to understand important phenomena in their immediate, familiar environments. The project has the potential to serve as a model for how to make cutting edge science directly accessible to all students. The project is a collaborative effort that engages scientists, science education researchers, curriculum developers, school curriculum and instruction leaders, and science teachers in the longer term challenge of infusing Earth science concepts and practices across the core high school science courses.

Current guidelines and standards for science education promote learning that engages students in three interrelated dimensions: disciplinary core ideas, scientific practices, and crosscutting ideas. This project is guided by the hypothesis that when provided sustained opportunities to engage in three-dimensional learning experiences, in an integrated Earth science and chemistry context, students will improve in their ability to demonstrate the coordination of disciplinary core ideas, scientific practices, and crosscutting concepts when solving problems and developing explanations related to scientific phenomena. This project will employ a design based research approach, and during the two development-enactment-analysis-and-redesign cycles, the project team will collect student assessment data, teacher interview data, observational data from lessons, teacher surveys, and reflective teacher logbooks. These collected data will provide information about how teachers implement the lessons, what students do during the lessons, and what students learn from them that will lead to better design and a better understanding of student learning. This information will be used to inform the modification of lessons from cycle to cycle, and to inform the professional development materials for teachers. The research agenda for the project is guided by the following questions: 1. What are the design features of ICE lessons that support teachers in enacting three-dimensional instruction within the context of their classroom? 2. What are the design features of embedded three-dimensional assessments that yield useful classroom data for teachers and researchers regarding their students' abilities to integrate core ideas, scientific practices, and crosscutting concepts? 3. What is the nature of student learning related to disciplinary core ideas, scientific practices, and crosscutting concepts that results from students' engagement in ICE lesson sets? 4. What differences emerge in student engagement and learning outcomes for ICE lessons that incorporate local phenomena or data sets as compared to lessons that do not? 5. What contextual factors (i.e., school context, administrative support, time constraints, etc.) influence teachers' implementation of three-dimensional instruction embedded within ICE lessons?


Project Videos

2019 STEM for All Video Showcase

Title: Integrating Chemistry and Earth Science (ICE)

Presenter(s): Alan Berkowitz, Vonceil Anderson, Bess Caplan, Kevin Garner, & Jonathon Grooms


Engaging Students in Scientific Practices: Evaluating Evidence and Explanation in Secondary Earth and Space Science

This project will develop, implement, test, and revise instructional approaches and materials for high school students that focus on the links between scientific evidence and alternative explanations of phenomena relating to Earth and space education. Students will learn to construct diagrams showing the links between explanatory models of natural phenomena and lines of evidence, and then evaluate the plausibility of various alternative explanations for events.

Lead Organization(s): 
Award Number: 
1721041
Funding Period: 
Fri, 09/01/2017 to Tue, 08/31/2021
Full Description: 

This project will develop, implement, test, and revise instructional approaches and materials for high school students that focus on the links between scientific evidence and alternative explanations of phenomena relating to Earth and space education. Students will examine alternative explanations for natural phenomena associated with extreme weather events, freshwater resource availability, and related topics in learning how to evaluate scientifically valid lines of evidence and explanation. Students will learn to construct diagrams showing the links between explanatory models of natural phenomena and lines of evidence, and then evaluate the plausibility of various alternative explanations for events. It is expected that engagement in these activities will help students gain proficiency in model-based reasoning, critical thinking, planning and analyzing scientifically valid investigations, constructing plausible explanations, engaging in collaborative argumentation, and critically evaluating scientific information.

This 4-year Design and Development project will examine use of Model-Evidence Link (MEL) diagrams that are intended to help students cognitively construct mental scaffolds that assist their engagement in the practices of critical evaluation, plausibility appraisal, and knowledge construction related to science topics that are considered by some as controversial. Prior research has demonstrated the potential educational outcomes of using MEL diagrams, but this project will extend the previous work by examining an approach where students construct their own MEL diagrams (build-a-MELs, or baMELs). The project will examine the use of both pre-constructed MELs and baMELs for effectiveness in promoting student engagement in scientific reasoning and practices. The project will employ design-based research methodologies in pursuing answers to three research questions: (1) Do baMEL activities tested in multiple high school classroom settings promote critical evaluation, plausibility reappraisal, and  scientifically accurate knowledge construction about controversial Earth and space science topics? (2) How do these additional baMELs differ from pre-constructed MELs in promoting critical evaluation, plausibility reappraisal, and knowledge construction? And (3) To what extent does repeated use of both pre-constructed MELs and baMELs result in student engagement of scientific practices (i.e., asking critical questions, using model-based reasoning, planning and analyzing scientifically valid investigations, constructing plausible explanations, engaging in collaborative argumentation, and critically evaluating scientific information)? The project will engage high school students taking Earth and space classes in selected schools of Georgia, New Jersey, and within Philadelphia. Teacher professional development opportunities associated with the project will include summer institutes, classroom supports, and mentoring sessions.

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