The Decapoda - shrimp, lobsters, and crabs - are an economically important, diverse group of animals whose geologic history extends back 400 million years. Living representatives, numbering over 15,000 species, are global in distribution and nearly ubiquitous in oceanic and non-oceanic environments. They exert a major impact on ecosystems; understanding the dynamics of their fossil record will illuminate their historical impact on ecosystems. We will test the hypothesis that decapods are arrayed in a series of discrete evolutionary faunas; remarkably, the vast array of living and fossil decapods in diverse interrelated groups have exploited four basic body plans repeatedly. Other hypotheses to be tested are that the Decapoda have repeatedly adopted a limited number of baupläne, or generalized architectures, throughout their history; that they have experienced explosive evolutionary radiations followed by periods of no determinable change; and that they are generally resistant to mass extinction events. These hypotheses will be tested using a unique dataset compiled and assessed by the Principle Investigators: a compilation of all fossil decapod species, arrayed in a classification scheme including fossil and living taxa, with geologic and geographic ranges of all species, including a phylogeny (i.e. "family tree") for many sub-groups within the Decapoda. The dataset will be expanded to include ecological data for each taxon and will be entered into the Paleobiology Database, an NSF-supported vehicle for analyzing the fossil record. Employing its methodology, patterns of diversity and macroevolution of the decapods will be generated at levels ranging from the entire Order to species level. This will result in a comprehensive analysis of macroevolutionary patterns of this major group for the first time. Available paleoecological data derived from field studies and published records will be used to determine the effects of various environmental factors such as seafloor conditions, reef development, water depth, and temperature on morphology, extinction survivorship, and diversity. Because decapods have a remarkable range of morphological variation preservable in the fossil record, the diversity of the groups of decapods can be assessed in relation to their morphological characteristics. Defining the history of taxa with specialized morphology will permit recognition of body plans that have been exploited by different decapod groups throughout the history of the clade.
Intellectual merit. This study will provide the most comprehensive analysis of macroevolution of the Decapoda yet conducted, all based upon a unique dataset that is internally consistent by virtue of its having been developed entirely by the investigators. It will document the significance of employing a high resolution, species-level database for interpretation of diversity. The hypotheses and conclusions derived here will provide a model and the foundation for future work on Decapoda, Arthropoda, and macroevolution of well-constrained groups. It will provide a test for the efficacy of PBDB data versus a constrained dataset assessed by specialist systematists.
Broader impacts. The work will introduce undergraduate students at Kent State at Stark, an undergraduate campus, and Kent State at Kent, to research that involves paleoecological, paleogeographical, and functional morphological elements which, in turn, will be communicated to other students. Because decapods are known to virtually everyone, they form an excellent group to use to inform the public about ancient patterns of diversity and the relationship between the morphology of organisms, variations in their environmental requirements, and their adaptability to different physical conditions. This will be conveyed in a professionally constructed display which has the potential to be exhibited in museums and universities around the country. Small kits designed for use in elementary and middle schools will be available to allow students to make their own observations about the adaptations of decapods to their environment and its effect on diversity. Published papers and presentations on results of research at meetings will be prepared throughout the course of the research. Because the study of modern biodiversity is a concern of the general public, presentations to broader audiences as well as geology classes will provide a broad historical context for understanding modern patterns of diversity. Data entered into Paleobiology Database and Ohio Data Resource Commons will be openly available to other researchers and the general public. Combined, the databases will assure archival storage and public access, following a proprietary period.
The purpose of this paper is to explore and discuss the role of practical work in the teaching and learning of science at school level. It emphasizes practical work as a means for students to learn about the nature of science.
Reports from the NSF, NRC, AAAS, and others urge over and over that we must teach "science as science is done," that "science is a way of knowing," that our goal should be to impart "scientific habits of mind," and that learning must be learner-centered and oriented toward process. Fine. But what does this really mean for science education, and especially laboratory education?
This paper explores the role of laboratory and field-based research experiences in secondary science education by summarizing research documenting how such activities promote science learning. Classroom and field-based "lab work" is conceptualized as central components of broader scientific investigations of the natural world conducted by students. Considerations are given to nature of professional scientific practice, the personal relevance of student's understanding of the nature of empirical scientific research, and the role of technology to support learning. Drawing upon classroom learning
The goal of this article is to provide an integrative review of research that has been conducted on the development of children's scientific reasoning. Scientific reasoning (SR), broadly defined, includes the thinking skills involved in inquiry, experimentation, evidence evaluation, inference and argumentation that are done in the service of conceptual change or scientific understanding. Therefore, the focus is on the thinking and reasoning skills that support the formation and modification of concepts and theories about the natural and social world. Major empirical findings are discussed
This paper will review literature on learning science in K-8 classrooms by asking and answering three major questions: Who learns science in classrooms? How is science learned in classrooms? What science is learned in classrooms? These questions will be addressed from a sociocultural perspective, which means that the unit of analysis (both theoretically and methodologically) should include both the individual and the social world. Thus, the proposed connections between causes and outcomes must include contextual as well as psychological factors.
The purpose of this paper is to review what is known about informal science learning and to recommend areas for further research. The review is intended to support an examination of how children's science learning experiences in designed informal environments like science museums and zoos relate to science learning activities in K-8 schools.
To begin, this paper describes the climate in science education in the United States, and describes and defines formative assessment. Next, Black & Wiliam’s review and two other important empirical studies will be summarized. Then, a framework characterizing different forms of formative assessment is presented. Non-empirical studies are organized according to this continuum. Finally, the paper describes limitations in the implementation of formative assessment in K-8 science, and summarizes assessment practices that show promise for improving student learning. The important contribution of the
Young people’s participation in science, technology, engineering and mathematics (STEM) is a matter of international concern. Studies and careers that require physical sciences and advanced mathematics are most affected by the problem and women in particular are under‐represented in many STEM fields. This article views international research about young people’s relationships to, and participation in, STEM subjects and careers through the lens of an expectancy‐value model of achievement‐related choices. In addition it draws on sociological theories of late‐modernity and identity, which situate
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Maria Vetleseter BoeEllen Karoline HenriksenTerry LyonsCamilla Schreiner
“Science for All” is a mantra that has guided science education reform and practice for the past 20 years or so. Unfortunately, after 20 years of “Science for All” guided policy, research, professional development, and curricula African Americans continue to participate in the scientific enterprise in numbers that are staggeringly low. What is more, if current reform efforts were to realize the goal of “Science for All,” it remains uncertain that African American students would be well-served. This article challenges the idea that the type of science education advocated under the “Science for
The Museum of Aviation: STEM-ulating Georgia's Future Workforce Through Outreach project will build partnerships between the Museum of Aviation, STARBASE, six Georgia school districts, NASA, and volunteer mentors that promote STEM literacy, awareness of NASA's mission, and encourage the pursuit of STEM careers. This goal will be achieved through meeting the following objectives: -Promote lifelong learning by students, educators, and families, using NASA-themed STEM and missions via six outreach programs serving 10,750 participants (including 9,000 students, 1,600 parents, and 150 teachers). -Improve the understanding of NASA's missions, contributions to STEM disciplines and careers by students and faculty in grades pre K-8 by at least 35%. To accomplish the objectives, 6 STEM-based outreach programs will be provided to 12 school districts and will serve students, parents, and teachers. -ACE on the Go - STEM Modules use hands-on interactive activities for 2nd-5th graders -Family STEM Night - provides 2nd-5th graders and their families an opportunity to partake in 15 or more hands-on, interactive experiments that demonstrate STEM principles. -Aviation Outreach - introduces 6th-8th graders to aviation, and to STEM related careers. -STEM Afterschool - 6th-8th graders will learn about forces and motion and how forces make flight possible. -STARBASE 2.0 Afterschool STEM Mentoring Club consists of two components - a STEM Academy and a STEM Mentoring Afterschool Program both for underserved and at-risk youth in grades 6-8. -Teacher Training – STEM Workshops for teachers through the Georgia NASA RERC. This project will help to strengthen Georgia's future workforce by targeting students traditionally underserved and underrepresented in communities and in STEM fields. It will help attract and retain students in STEM disciplines by engaging students in STEM education and exposing them to STEM careers, and connect students, teachers, and families to NASA's mission by building strategic partnerships with formal education providers. The project will also help to strengthen the nation's and NASA's future workforce, attract and retain students in STEM disciplines, and engage Americans in NASA's mission.
The Dynamic Earth: You Have To See it To Believe It is a public exhibition and suite of programming designed to educate and excite K-8 students, teachers, and families about weather and climate science, plate tectonics, erosion, and stream formation. The Dynamic Earth program draws attention to the importance of large-scale earth processes and the human impacts on these processes, utilizing real artifacts, hands-on models, and NASA earth imagery and data. The program includes the exhibition, student workshops, family workshops, annual professional development opportunities for classroom teachers, innovative theater shows, lectures for adults by visiting scientists, and interpretive activities. The Montshire Museum of Science has partnered with Chabot Space and Science Center (CA) and the US Army Corps of Engineers Cold Regions Research and Engineering Laboratory (NH) on various components. The project has broadened our internal capacity for providing quality earth science programming by greatly expanding our program titles and allowing us to create hands-on materials for use by our educators and to loan to schools in our Partnership Initiative. Programming developed during the grant period continues to reach thousands of students and teachers each year, both on-site and as part of our rural outreach efforts.