Students' misunderstandings and misconceptions in college freshman chemistry (general and organic)     

Uri Zoller 《科学教学研究杂志》1990,27(10):1053-1065

Both chemistry teachers and nonmajor students appear to agree that freshman chemistry may well be the most problematic traditional science discipline taught in the first year of college—as far as students' misunderstandings, learning difficulties, and misconceptions are concerned. The above is probably due to the many abstract, nonintuitive concepts, which are not directly interrelated. Consequently, in such cases, the powerful, general teaching strategy of “concept mapping” must be replaced by alternative, specific strategies. Selected illustrative examples of students' learning difficulties and misconceptions in freshman general and organic chemistry are presented in the students' terms, followed by the corresponding successfully applied, specific, concept-oriented, eclectic intervention strategies the author uses in order to overcome the difficulties. Based on longitudinal in-class observations, interpretive study, and analysis it is suggested that those students' misconceptions in freshman chemistry which are not interrelated logically and/or derived from one another are not prone to the general “concept mapping” approach and should be dealt with by using the appropriate, specific teaching strategy.  相似文献   

Exploring Views about LARCs Among Parenting Rural Latinx Teenagers,Their Mothers,and Providers: Implications for Sexuality Education and Care     

Yumary Ruiz  Shaina Riciputi  Vincent Guilamo-Ramos  Stewart C. Alexander 《American journal of sexuality education》2019,14(2):165-185

While long-acting reversible contraception (LARC) reduces risk of repeat-births, use remains low among rural Latinx adolescent mothers. This qualitative study identified perspectives about factors that influence LARC use among this population. Participants were dyads of parenting Latinx adolescent daughters and their mothers (n?=?9 dyads) and nurses (n?=?17). Findings revealed themes specific to this vulnerable population including (a) distinct ways LARC characteristics fit into parenting teenagers’ lives, (b) supportive health care climate toward LARCs, and (c) factors that inhibit LARC uptake. The study has implications for sexuality education that seeks to reduce repeat-births among this population.  相似文献   

Evaluating students' science notebooks as an assessment tool     

Maria A. Ruiz‐Primo  Min Li  Carlos Ayala  Richard J. Shavelson 《International Journal of Science Education》2013,35(12):1477-1506

The idea of using science notebooks as a classroom assessment tool is not new. There is general agreement that science notebooks allow teachers to assess students' conceptual and procedural understanding and to provide the feedback students need for improving their performance. In this study we examined the use of science notebooks as an unobtrusive assessment tool that can also be used by individuals outside the classroom (for example, school district personnel), and as a means for obtaining information about students' learning and their opportunities to learn. More specifically, in this study students' science notebooks were used as a source of data about the (a) implementation of a curriculum's intended activities, (b) students' performance, and (c) quality of teachers' feedback. Our results indicated that: (1) Students' science notebooks can be reliably scored. Unit implementation, student performance, and teacher feedback scores were highly consistent across raters and units. (2) High and positive correlations with other performance assessment scores indicated that the student performance score can be considered as an achievement indicator. And (3) low performance scores across the two units revealed that students' communication skills and understanding were far away from the maximum score and did not improve over the course of instruction during the school year. This result may be due, in part, to the fact that no teacher feedback was found in any of the students' notebooks across the six classrooms studied. This may reflect some characteristics of the teachers' assessment practices that may require further professional development.  相似文献   

Comparing Virtual and Physical Robotics Environments for Supporting Complex Systems and Computational Thinking     

Berland  Matthew  Wilensky  Uri 《Journal of Science Education and Technology》2015,24(5):628-647

Journal of Science Education and Technology - Both complex systems methods (such as agent-based modeling) and computational methods (such as programming) provide powerful ways for students to...  相似文献   

University students’ strategies and criteria during self-assessment: instructor’s feedback,rubrics, and year level effects     

Panadero  Ernesto  Pérez  Daniel García  Ruiz  Javier Fernández  Fraile  Juan  Sánchez-Iglesias  Iván  Brown  Gavin T. L. 《European Journal of Psychology of Education - EJPE》2023,38(3):1031-1051

European Journal of Psychology of Education - This study explores the effects of feedback type, feedback occasion, and year level on student self-assessments in higher education. In total, 126...  相似文献   

Using digital images of the zebra finch song system as a tool to teach organizational effects of steroid hormones: a free downloadable module     

Grisham W  Schottler NA  McCauley LM  Pham AP  Ruiz ML  Fong MC  Cui X 《CBE life sciences education》2011,10(2):222-230

Zebra finch song behavior is sexually dimorphic: males sing and females do not. The neural system underlying this behavior is sexually dimorphic, and this sex difference is easy to quantify. During development, the zebra finch song system can be altered by steroid hormones, specifically estradiol, which actually masculinizes it. Because of the ease of quantification and experimental manipulation, the zebra finch song system has great potential for use in undergraduate labs. Unfortunately, the underlying costs prohibit use of this system in undergraduate labs. Further, the time required to perform a developmental study renders such undertakings unrealistic within a single academic term. We have overcome these barriers by creating digital tools, including an image library of song nuclei from zebra finch brains. Students using this library replicate and extend a published experiment examining the dose of estradiol required to masculinize the female zebra finch brain. We have used this library for several terms, and students not only obtain significant experimental results but also make gains in understanding content, experimental controls, and inferential statistics (analysis of variance and post hoc tests). We have provided free access to these digital tools at the following website: http://mdcune.psych.ucla.edu/modules/birdsong.  相似文献   

Active relatives and health-related physical fitness in European adolescents: The HELENA Study     

M Martín-Matillas  FB Ortega  JR Ruiz  D Martínez-Gómez  G Vicente-Rodríguez  A Marcos  L Béghin  A Kafatos  M González-Gross  M Zaccaria  D Molnár  S De Henauw  M Sjöström  LA Moreno  MJ Castillo On Behalf Of The Helena Study 《Journal of sports sciences》2012,30(13):1329-1335

Abstract High physical fitness in childhood and adolescence is positively associated with favourable health-related outcomes. Our aim was to examine the relationship between relatives' (father, mother, brother, sister, and best friend) physical activity engagement and encouragement on adolescents' physical fitness. Adolescents were part of the HELENA study, a multi-centre study conducted in 10 cities from nine European countries in 2006-2008. Participants were 3288 adolescents (48% boys, 52% girls) aged 12.5-17.5 years with valid data on at least one of the three fitness variables studied: muscular strength (standing long jump), speed/agility (4×10 m shuttle run), and cardiorespiratory fitness (20 m shuttle run). The adolescents reported their relatives' physical activity engagement and encouragement. Analysis of covariance showed that relatives' physical activity engagement (father, mother, brother, and best friend) was positively related to cardiorespiratory fitness (P?相似文献   

La segunda lengua en el preescolar: Una propuesta de diseño     

Uri Ruiz 《Cultura y Educación》2013,25(5):57-68

Uno de los principales problemas que plantea la enseñanza de una segunda lengua es el de contrarrestar la corriente «gramaticalista» imperante durante muchos años en nuestras escuelas, donde el acercamiento a otras lenguas ha sido sinónimo para el niño de conjugaciones, reglas de formación de plurales, listas interminables de vocabulario y, como mucho, «contextualizaciones» en aeropuertos y otros escenarios de semejante inadecuación para el mundo de intereses del alumno. En este artículo se pone de relieve que, si ese enfoque suele ser inoperante en el caso de alumnos con edad suficiente para acometer y entender un acercamiento «metalingüístico» a una segunda lengua, resultaría dramático en edades inferiores, abogando por un enfoque pragmático y comunicativo.  相似文献   

Promoting Transfer by Grounding Complex Systems Principles     

Robert L. Goldstone  Uri Wilensky 《学习科学杂志》2013,22(4):465-516

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UCLA Community College Bibliography     

Eddy A. Ruiz 《Community College Journal of Research & Practice》2013,37(12):1003-1010

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