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?
The purpose of this paper is to examine the role of laboratory-based science from a perspective that synthesizes developments in (1) science studies, e.g., history, philosophy and sociology of science and (2) the learning sciences, e.g., cognitive science, philosophy of mind, educational psychology, social psychology, computer sciences, linguistics, and (3) educational research focusing on the design of learning environments that promote dynamic assessments. Taken together these three domains have reshaped our thinking about the role inquiry, and in turn the laboratory, has in science
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
The media are the most pervasive disseminators of informal science education in this country. Watching commercial and non-commercial television will provide you with information on alligators or zygotes, bio-fuels or stem cells, polar bears or hurricanes. Radio, too, provides discussions of genetics and global warming and birds and stars. Often radio and television will cover science issues with a contextual overlay of politics or morality, so viewers and listeners can sense how they and their community relate to it. But for excitement, going to the theater to see an IMAX movie will take you
Technological literacy is essential to ensure lifelong engagement in rapidly changing societies. Three factors that affect learning in later adulthood are age-related declines in processing new information, changes in motivation and reprioritization of emotional wellbeing over new learning, and the ways in which beliefs and stereotypes influence motivation and learning.
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Casey LindbergEdwin CarstensenLaura Cartsensen
This paper lays out a theory of (re-)generative learning to explain how families and communities socialize young learners into thinking like scientists and mathematicians. Cultural communities and their families orient their young in varied ways toward the language, behaviors, and self-theories about the future presupposed in the learning of science and mathematics. Certain socialization processes and norms correspond closely with those that scientists and artists use in laboratories, studios, and rehearsals. Certain norms of politeness and patterns of language differ significantly from habits