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Ann M. L. Cavallo - One of the best experts on this subject based on the ideXlab platform.
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Meaningful learning, reasoning ability, and students' understanding and problem solving of topics in genetics
Journal of Research in Science Teaching, 1996Co-Authors: Ann M. L. CavalloAbstract:The purpose of this study was to explore relationships among school students' (N = 189) meaningful learning orientation, reasoning ability and acquisition of meaningful understandings of genetics topics, and ability to solve genetics problems. This research first obtained measures of students' meaningful learning orientation (meaningful and rote) and reasoning ability (preformal and formal). Students were tested before and after laboratory-based learning cycle genetics instruction using a multiple choice assessment format and an open-ended assessment format (mental model). The assessment instruments were designed to measure students' interrelated understandings of genetics and their ability to solve and interpret problems using Punnett Square diagrams. Regression analyses were conducted to examine the predictive influence of meaningful learning orientation, reasoning ability, and the interaction of these variables on students' performance on the different tests. Meaningful learning orientation best predicted students' understanding of genetics interrelationships, whereas reasoning ability best predicted their achievement in solving genetics problems. The interaction of meaningful learning orientation and reasoning ability did not significantly predict students' genetics understanding or problem solving. Meaningful learning orientation best predicted students' performance on all except one of the open-ended test questions. Examination of students' mental model explanations of meiosis, Punnett Square diagrams, and relationships between meiosis and the use of Punnett Square diagrams revealed unique patterns in students' understandings of these topics. This research provides information for educators on students' acquisition of meaningful understandings of genetics. © 1996 John Wiley & Sons, Inc.
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Relationships between Students' Meaningful Learning Orientation and Their Understanding of Genetics Topics*
Journal of Research in Science Teaching, 1994Co-Authors: Ann M. L. Cavallo, Larry E. SchaferAbstract:This study explored factors predicting the extent to which high school students (N = 140) acquired meaningful understanding of the biological topics of meiosis, the Punnett-Square method, and the relationships between these topics. This study (a) examined mental modeling as a technique for measuring students' meaningful understanding of the topics, (b) measured students' predisposed, generalized tendency to learn meaningfully (meaningful learning orientation), (c) determined the extent to which students' meaningful learning orientation predicted meaningful understanding beyond that predicted by aptitude and achievement motivation, (d) experimentally tested two instructional treatments (relationships presented to students, relationships generated by students), (e) explored the relationships of meaningful learning orientation, prior knowledge, instructional treatment, and all interactions of these variables in predicting meaningful understanding. The results of correlations and multiple regressions indicated that meaningful learning orientation contributed to students' attainment of meaningful understanding independent of aptitude and achievement motivation. Meaningful learning orientation and prior knowledge interacted in unique ways for each topic to predict students' attainment of meaningful understanding. Instructional treatment had relatively little relationship to students' acquisition of meaningful understanding, except for learners midrange between meaningful and rote. These findings imply that a meaningful learning approach among students may be important, perhaps as much or more than aptitude and achievement motivation, for their acquisition of interrelated, meaningful understandings of science.
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The Retention of Meaningful Understanding of Meiosis and Genetics.
1992Co-Authors: Ann M. L. CavalloAbstract:This study investigated the retention of meaningful understanding of the biological topics of meiosis, the Punnett Square method and the relations between these two topics. This study also explored the predictive influence of students' general tendency to learn meaningfully or by rote (meaningful learning orientation), prior knowledge of meiosis, instructional treatment (students told relations between concepts, students asked to construct relations themselves) and all interactions of these variables on the retention of meaningful understanding of the topics. A 50-item Likert instrument taken by the students and teacher ratings of their students' approach to learning (meaningful, rote) were used in combination as a measure of students' meaningful learning orientation. The mental model technique was used to assess students' meaningful-level and rote-level understandings of the topics. Students were given a pre-test mental model on meiosis (prior knowledge variable) and were randomly assigned to the two instructional treatments. Results of correlations indicated that students' attainment of meaningful understanding as measured immediately after instruction was significantly and positively related with their retention of meaningful understanding. Stepwise multiple regressions revealed that students' retention of meaningful understanding of meiosis was predicted by student's meaningful learning orientation and prior knowledge of meiosis. The interactions of meiosis and meaningful learning orientation best predicted both student' retention of meiosis and the conceptual relation between the topics. None of the predictor variables (prior knowledge, meaningful learning orientation, and treatment) nor the interaction terms predicted students' retention of meaningful understanding of the Punnett Square method. (Author/PR) THE RETENTION OF MEANINGFUL UNDERSTANDING OF MEIOSIS AND GENETICS ANN LIBERATORE CAVALLO SCIENCE EDUCATION CENTER THE UNIVERSITY OF OKLAHOMA NORMAN, OKLAHOMA 73019 U.S DEPARTMENT OF EDUCATION Office of Educational Research and Improvement EDUCATIONAL RESOURCES INFORMATION CENTER IERICI :XTnis document has been reproduced as received Iron, the person or organization originating it Minor changes have been made to improve reproduction duality Points of view or opinions slated in this dOcu merit do not necessarily represent official OF RI position or Policy PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY TO THE EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC)." Paper presented at a poster session at the Annual Conference of the National Association for Research in Science Teaching, Boston, MA, March 22, 1992. ( THE RETENTION OF MEANINGFUL UNDERSTANDING OF MEIOSIS AND GENETICS Ann L. Cavallo Assistant Professor Science Education Center The University of Oklahoma Norman, Oklahoma 73019
Silvio Addolorato - One of the best experts on this subject based on the ideXlab platform.
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variables tangibles e intangibles sobre productos y servicios la creaccion de itness application Punnett Square faps
SPORT TK-Revista EuroAmericana de Ciencias del Deporte, 2018Co-Authors: Silvio AddoloratoAbstract:Health and fitness (H&F) industry has always highlighted product’s tangible variables over untouchable ones. Nowadays conspicuous market models are proving that these facets are increasingly required by international societies and contexts and are demonstrated to be incredibly useful. The applicability and usability of fitness resources (products, services or mixed solutions) depends upon a genuinely innovative approach to the definition of those hidden intangible variables. This literature analysis underline that also academic contributions focus more attention on ‘touchable’ variables, but it’s now the time for the ‘B side’. The introduced Fitness Applications ‘Punnett Square’ (FAPS) tool helps to better understand the ever-growing world of fitness industry resources. It is also direct applicable to all those sector professionals who operate in their daily-life facility routine, with the final goal to increase levels of assessment of H&F product and service knowledge, for what already own and for emergent choices or purchasing actions.
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product or service tangible and intangible variables the creation of the itness application Punnett Square faps
Sport TK: revista euroamericana de ciencias del deporte, 2018Co-Authors: Silvio AddoloratoAbstract:espanolLa industria itness y salud (H&F) siempre marco mas las vari- ables tangibles de los productos antes de las intangibles. Hoy en dia, en los modelos de negocios que funcionan, se ha demostrado como estas resul- tan increiblemente utiles. La aplicabilidad y usabilidad de recursos itness (productos, servicios o soluciones mixtas) se planean sobre el innovador enfoque que deine estas calidades mas escondidas. Esta revision de la lit- eratura academica tiene el reto de evidenciar este ‘lado B’. La introduccion de la herramienta nombrada Fitness Applications ‘Punnett Square’ (FAPS) ayudara a entender de forma mejor los recursos del sector itness que siguen en continuo desarrollo. Tambien, resultara aplicable a todos los profesion- ales del sector que utilizan equipos (fisicos o menos) en su dia a dia en instalaciones deportivas. Bien para todo lo que ya esta en posesion para aumentar los niveles de valoraccion, tanto como para todas las elicciones frente a acciones futuras. EnglishHealth and itness (H&F) industry has always highlighted prod- uct’s tangible variables over untouchable ones. Nowadays conspicuous market models are proving that these facets are increasingly required by international societies and contexts and are demonstrated to be incredibly useful. he applicability and usability of itness resources (products, ser- vices or mixed solutions) depends upon a genuinely innovative approach to the deinition of those hidden intangible variables. his literature analysis underline that also academic contributions focus more attention on ‘touch- able’ variables, but it’s now the time for the ‘B side’. he introduced Fitness Applications ‘Punnett Square’ (FAPS) tool helps to better understand the ever-growing world of itness industry resources. It is also direct applicable to all those sector professionals who operate in their daily-life facility rou- tine, with the inal goal to increase levels of assessment of H&F product and service knowledge, for what already own and for emergent choices or purchasing actions.
Michael J. Wade - One of the best experts on this subject based on the ideXlab platform.
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Populational Heritability: Extending Punnett Square Concepts to Evolution at the Metapopulation Level
Biology and Philosophy, 2000Co-Authors: James R. Griesemer, Michael J. WadeAbstract:In a previous study, using experimental metapopulations of the flour beetle, Tribolium castaneum, we investigated phase III of Wright's shifting balance process (Wade and Griesemer 1998). We experimentally modeled migration of varying amounts from demes of high mean fitness into demes of lower mean fitness (as in Wright's characterization of phase III) as well as the reciprocal (the opposite of phase III). We estimated the “meta-populational heritability” for this level of selection by regression of offspring deme means on the weighted parental deme means. Here we develop a Punnett Square representation of the inheritance of the group mean to place our empirical findings in a conceptual context similar to Mendelian inheritance of individual traits. The comparison of Punnett Squares for individual and group inheritance shows how the latter concept can be rigorously defined and extended despite the lack of explicitly formulated, simple “Mendelian” laws of inheritance at the group level. Whereas Wright's phase III combines both interdemic selection and meta-populational inheritance, our formulation separates the issue of meta-populational heritability from that of interdemic selection. We use this conceptual context to discuss the controversies over the levels of selection and the units of inheritance.
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populational heritability extending Punnett Square concepts to evolution at the metapopulation level
Biology and Philosophy, 2000Co-Authors: James R. Griesemer, Michael J. WadeAbstract:In a previous study, using experimental metapopulations of the flour beetle, Tribolium castaneum, we investigated phase III of Wright's shifting balance process (Wade and Griesemer 1998). We experimentally modeled migration of varying amounts from demes of high mean fitness into demes of lower mean fitness (as in Wright's characterization of phase III) as well as the reciprocal (the opposite of phase III). We estimated the “meta-populational heritability” for this level of selection by regression of offspring deme means on the weighted parental deme means.
James R. Griesemer - One of the best experts on this subject based on the ideXlab platform.
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Populational Heritability: Extending Punnett Square Concepts to Evolution at the Metapopulation Level
Biology and Philosophy, 2000Co-Authors: James R. Griesemer, Michael J. WadeAbstract:In a previous study, using experimental metapopulations of the flour beetle, Tribolium castaneum, we investigated phase III of Wright's shifting balance process (Wade and Griesemer 1998). We experimentally modeled migration of varying amounts from demes of high mean fitness into demes of lower mean fitness (as in Wright's characterization of phase III) as well as the reciprocal (the opposite of phase III). We estimated the “meta-populational heritability” for this level of selection by regression of offspring deme means on the weighted parental deme means. Here we develop a Punnett Square representation of the inheritance of the group mean to place our empirical findings in a conceptual context similar to Mendelian inheritance of individual traits. The comparison of Punnett Squares for individual and group inheritance shows how the latter concept can be rigorously defined and extended despite the lack of explicitly formulated, simple “Mendelian” laws of inheritance at the group level. Whereas Wright's phase III combines both interdemic selection and meta-populational inheritance, our formulation separates the issue of meta-populational heritability from that of interdemic selection. We use this conceptual context to discuss the controversies over the levels of selection and the units of inheritance.
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populational heritability extending Punnett Square concepts to evolution at the metapopulation level
Biology and Philosophy, 2000Co-Authors: James R. Griesemer, Michael J. WadeAbstract:In a previous study, using experimental metapopulations of the flour beetle, Tribolium castaneum, we investigated phase III of Wright's shifting balance process (Wade and Griesemer 1998). We experimentally modeled migration of varying amounts from demes of high mean fitness into demes of lower mean fitness (as in Wright's characterization of phase III) as well as the reciprocal (the opposite of phase III). We estimated the “meta-populational heritability” for this level of selection by regression of offspring deme means on the weighted parental deme means.
Chang-long Du - One of the best experts on this subject based on the ideXlab platform.
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Model test of the cutting properties of a shearer drum
Mining Science and Technology (china), 2009Co-Authors: Chang-long Du, Xue ChengAbstract:Abstract According to similarity theory, we carried out a dimensional analysis of the shearer drum correlation parameters and built similarity criteria. Based on these, similarity models of shearer drums were developed. Simultaneously, based on an established cutting testbed of the coal and rock, cutting tests of different pick arrangements of the drum models were carried out, where the compressive strength of the analogous cutting material was 2.48 MPa and the drum rotary speed 67.5 r/min. The variance, the mean values, maxima and mean maxima of the torque load were analyzed for different type drum models. Moreover, the relationships between the type of pick arrangements and the cutting lump coal percentage were studied. The results indicate that the load fluctuation of the sequence drum is larger than that of the Punnett Square drum in the cutting process and the lump coal percentage and economic benefits of the sequence drum are inferior to the Punnett Square drum. We conclude that the Punnett Square drum is superior to the sequence drum.
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Study on pick arrangement of shearer drum based on load fluctuation
Journal of China University of Mining and Technology, 2008Co-Authors: Chang-long Du, Ti-jian LiAbstract:Abstract According to the coal or rock cutting theory, a mechanical model and computing formula for a pick and the drum load fluctuation model were established in order to obtain relationships between pick arrangements and drum fluctuation loads, drum rotary speeds and haulage speeds. Based on a minimum load fluctuation, an optimal mathematical model was established for drum pick arrangements. The effects of pick arrangements (including Punnett Square, sequence, aberrance I and II) on the drum load fluctuation coefficient are discussed. The relationships between the pick arrangements of the drum with different start vanes and the cutting load fluctuation coefficient, the drum rotary speed and haulage speed were also studied. The results indicate that the Punnett Square arrangement has a smaller cutting load fluctuation coefficient than other forms of arrangement and the drum with the 4-start vanes has the smallest coefficient. The drum rotary speed and haulage speed are affected not only by pick arrangements, but also by the number of vanes.
