共查询到20条相似文献，搜索用时 31 毫秒
1.
This study investigates how the enactment of a climate change curriculum supports students’ development of critical science
agency, which includes students developing deep understandings of science concepts and the ability to take action at the individual
and community levels. We examined the impact of a four to six week urban ecology curriculum on students from three different
urban high schools in the USA. Data collection included pre and posttest written assessments from all students (n = 75) and pre and post interviews from focal students (n = 22) to examine how students’ conceptual understandings, beliefs and environmental actions changed. Our analyses showed
that at the beginning of the curriculum, the majority of students believed that climate change was occurring; yet, they had
limited conceptual understandings about climate change and were engaged in limited environmental actions. By the end of the
curriculum, students had a significant increase in their understanding of climate change and the majority of students reported
they were now engaged in actions to limit their personal impact on climate change. These findings suggest that believing a
scientific theory (e.g. climate change) is not sufficient for critical science agency; rather, conceptual understandings and
understandings of personal actions impact students’ choices. We recommend that future climate change curriculum focus on supporting
students’ development of critical science agency by addressing common student misconceptions and by focusing on how students’
actions can have significant impacts on the environment. 相似文献
2.
Daniel L. Dickerson John E. Penick Karen R. Dawkins Meta Van Sickle 《Journal of Science Teacher Education》2007,18(1):45-61
Although clean, potable groundwater constitutes one of our most valuable resources, few students or science educators hold
complete and appropriate understandings regarding the concept. Recent studies that focus on secondary students’ and preservice
science teachers’ understandings of groundwater found little difference between the groups’ conceptualizations of subsurface
hydrology. This article discusses possible reasons for the apparent lack of appropriate understanding regarding the complex
concept of groundwater. Specifically, we concentrate on the lack of emphasis concerning groundwater content in standards documents,
the need for increased attention to students’ spatial reasoning abilities, inadequate formal instruction for science teachers
concerning groundwater, and difficulty in designing appropriate assessment of groundwater concepts. We conclude by offering
suggestions for enhancing the teaching and learning of groundwater. 相似文献
3.
Brian L. Jones 《Research in Science Education》1990,20(1):161-170
The term ‘concept’ is used in different ways within educational literature and has at least two different, although related,
referents in relation to science knowledge, namely, public knowledge and private understandings. A taxonomic structure for
‘science concepts’ (public knowledge) has been developed to provide a rationale for the choice of phenomena to be used in
the investigation of students’ ‘concepts’ and also to act as a frame of reference for generating insights about the data to
be collected. Furthermore, it may be a useful heuristic to predict other science concepts likely to be highly problematic
in school teaching situations and thus worthy of detailed research. The taxonomy, called a ‘Scale of Empirical Distance’ (SED),
enables science concepts to be mapped according to their degree of closeness to concrete realities. The scale shows a recognition
of the empirical basis of science concepts and the role of human senses in the perception of the material world even though
“absolute objectivity of observation is not a possible ideal of science” as Harre (1972) has noted. The scale uses two binary
variables, namely, ‘visual’ and ‘tactile’, to generate four categories of science concepts ranging on a continuum from concrete
to abstract. Some concepts related to ‘matter’ will be classified and discussed.
Specializations: science teacher education, primary science curriculum and methods, students’ personal meanings of phenomena. 相似文献
4.
Ravit Golan Duncan Hava Bresler Freidenreich Clark A. Chinn Andrew Bausch 《Research in Science Education》2011,41(2):147-167
Genetics is the cornerstone of modern biology and understanding genetics is a critical aspect of scientific literacy. Research
has shown, however, that many high school graduates lack fundamental understandings in genetics necessary to make informed
decisions or to participate in public debates over emerging technologies in molecular genetics. Currently, much of genetics
instruction occurs at the high school level. However, recent policy reports suggest that we may need to begin introducing
aspects of core concepts in earlier grades and to successively develop students’ understandings of these concepts in subsequent
grades. Given the paucity of research about genetics learning at the middle school level, we know very little about what students
in earlier grades are capable of reasoning about in this domain. In this paper, we discuss a research study aimed at fostering
deeper understandings of molecular genetics at the middle school level. As part of the research we designed a two-week model-based
inquiry unit implemented in two 7th grade classrooms (N = 135). We describe our instructional design and report results based on analysis of pre/post assessments and written artifacts
of the unit. Our findings suggest that middle school students can develop: (a) a view of genes as productive instructions
for proteins, (b) an understanding of the role of proteins in mediating genetic effects, and (c) can use this knowledge to
reason about a novel genetic phenomena. However, there were significant differences in the learning gains in both classrooms
and we provide speculative explanations of what may have caused these differences. 相似文献
5.
Nejla Yürük 《Journal of Science Education and Technology》2007,16(6):515-523
The aim of this study was to investigate the effectiveness of instruction supplemented by conceptual change texts (CCTs) over
traditional instruction on students’ understanding of electrochemical (galvanic and electrolytic) cell concepts. The participants
of the study consisted of 64 students from the two classes of a high school located in Turkey. Classes were randomly assigned
to experimental group, which was exposed to CCTs as a supplementary material, and to control group, which was exposed to traditional
instruction. A 23-item multiple-choice test was developed assess students’ conceptual understanding of electrochemical cells.
This test was administered to both groups before and after the instruction. The results of ANCOVA indicated that students
who were instructed by using CCTs had better conceptual understanding of electrochemical cells than those experiencing traditional
instruction when their prior electrochemical cell concepts understanding was statistically controlled. The findings of this
study suggest that CCTs can be used as a cost- and resource-effective supplement to classroom instruction to promote students’
understanding science concepts. 相似文献
6.
The purposes of this study were to investigate students’ conceptual learning outcomes and the effect of motivation on students’
conceptual learning outcomes in two different contexts: a Web-based and a classroom-based instruction, which incorporated
the Dual Situation Learning Model (DSLM). Nine classes of Grade eight students (N = 190) were involved in the study; five classes participated in a Web-based context and four classes in a regular classroom-based
context. The topic covered was chemical reaction. Students’ conceptual change outcomes were assessed using eight two-tier
pre/post conceptual tests during the instruction and the reaction rate integrated conceptual test at the end of the instruction.
Students’ motivation data were collected in the beginning and during instruction using the items from the Students’ Motivation
Toward Science Learning (SMTSL) questionnaire. The data were analyzed using ANOVA, ANCOVA, bivariate correlation, and multiple
regression analysis. Findings revealed that students’ motivational factors were correlated significantly with their conceptual
learning outcomes in both Web-based and classroom-based science teaching. In the Web-based context, students’ motivation during
the Web-based learning played a more important role on students’ conceptual learning outcomes than before learning. 相似文献
7.
The present study focused on investigating the effectiveness of instruction via newly developed teaching materials based on
cooperative learning when compared to a traditional approach, on ninth grade students’ understanding of metallic bonding.
Fifty-seven ninth grade science students from two science classes in the same high school participated in this study. The
same teacher taught metallic bonding with cooperative learning to an experimental group (N = 28) and with a traditional teacher centred approach to a control group (N = 29). Students’ conceptual understanding of metallic bonding was measured using the Metallic Bonding Concept Test. The results
from the Student’s t test indicated that the mean score of the students in the experimental group was significantly higher in the experimental
group (78.60, SD = 8.62), than in the control group (54.33, SD = 9.11) after treatment. In the light of the results from the
concept test and individual interviews, the misconceptions related to metallic bonding were found less in the experimental
group than traditional. Five of these misconceptions were firstly identified in this study. The individual interviews which
were done with students from experimental group immediately after the instruction showed that students had positive perceptions
about their cooperative work experiences. 相似文献
8.
Students have been largely ignored in discussions about how best to teach science, and many students feel the curriculum is
detached from their lives and interests. This article presents a strategy for incorporating students’ interests into the formal
Biology curriculum, by drawing on the political meaning of “shadow government” as alternative policies developed by parties
not in office. A “shadow curriculum” thus reflects the interests and information needs of those who have no voice in deciding
what the formal curriculum should include, although they are the ones who are most influenced by it. High school students’
interests in three Biology topics were identified (n = 343) and retested on another student sample (n = 375), based on their solicited questions as indicators for interests. The results of this exploratory case study showed
that half of the questions asked by students in the areas of genetics, the cardiovascular system and the reproductive system
are not addressed by the national curriculum. Students’ questions were then expressed in the curricular language of principles,
phenomena and concepts in order to create a shadow curriculum. A procedure that could be used by other researchers and practitioners
to guide the development of a curriculum that is more aligned with student interests is suggested. 相似文献
9.
Uncovering the Potential: The Role of Technologies on Science Learning of Middle School Students 总被引：1，自引：0，他引：1
Angelia Reid-Griffin Glenda Carter 《International Journal of Science and Mathematics Education》2008,6(2):329-350
There is, no doubt, untapped potential in using technological tools to enhance the understanding of science concepts. This
study examines the potential by observing 7th and 8th grade middle school students’ (n = 23) use of portable data collection devices in a nine-week elective class, Exploring Technologies. Students’ use of the data collection devices and subsequent interactions were traced through audiocassette and videocassette
recordings, field notes, and student artifacts. The culminating activity for the course was a scientific investigation that
required students to use the technologies to answer student-selected research questions. To illustrate the use of technology
as a mediatory tool, an inquiry investigation of three student groups is described. In examining the three groups of middle
school students the researchers encountered specific evidence of technology maximizing students’ science learning. The students
were able to use the portable data collection devices in their investigations as they discussed scientific ideas related to
temperature and heat. The study’s findings indicated that the three student groups were able to use the tools to conduct scientific
inquiry and engage in scientific discourse. Further research on instructional approaches that allow students to develop expertise
by using technology as tools to construct knowledge about complex phenomena is encouraged. 相似文献
10.
We describe a model professional development intervention currently being implemented to support 3rd- through 5th-grade teachers’
science instruction in 9 urban elementary schools with high numbers of English language learners. The intervention consists
of curriculum materials for students and teachers, as well as teacher workshops throughout the school year. The curriculum
materials and workshops are designed to complement and reinforce each other in improving teachers’ knowledge, beliefs, and
practices in science instruction and English language development for ELL students. In addition to these primary goals, secondary
goals of the intervention included supporting mathematical understanding, improving scientific reasoning, capitalizing on
students’ home language and culture, and preparing students for high-stakes science testing and accountability through hands-on,
inquiry-based learning experiences. 相似文献
11.
Research on student learning in higher education suggests that threshold concepts within various disciplines have the capacity
to transform students’ understanding. The present study explores students’ understanding in relation to particular threshold
concepts in mathematics—integral and limit—and tries to clarify in what sense developing an understanding of those threshold
concepts involves a transformation of understanding in relation to ways of thinking in mathematics. Drawing on data collected
in interviews with students taking a basic course on calculus the analysis offers an initial characterisation of students’
understandings as algorithmic. It then proceeds to construct a more fine-grained theoretical account for how these understandings
develop in the course of the interview, suggesting that the transformative aspects of threshold concepts may be conceptualised
in terms of shifts in students’ contextualisations allowing the development of conceptions at different levels of abstraction
simultaneously interacting to shape students’ awareness of the ways of thinking and practising in the subject. 相似文献
12.
13.
Sri Rahayu Masakazu Kita 《International Journal of Science and Mathematics Education》2010,8(4):667-688
This study investigated Indonesian and Japanese students’ understandings of macroscopic and submicroscopic levels of representing
matter and its changes and the difficulties they have with these concepts. A multiple-choice questionnaire was constructed
and delivered to 447 Indonesian and 446 Japanese public senior high school students. The data were analyzed using quantitative
and qualitative methods. The findings of the study show students’ understandings of macro- and submicroscopic levels are stronger
for higher-grade levels, except that the Indonesian students’ pattern is slightly different. The average percentage of students
responding correctly on the macroscopic level ranges between 62% and 69% (Indonesia) and between 58% and 73% (Japanese), whereas
on the submicroscopic level ranges between 56% and 62% (Indonesian) and 44% and 66% (Japanese). Their understandings of the
macroscopic level, however, are higher than for the submicroscopic level. The soundness of students’ understandings of the
concepts increases with grade level, except for Indonesian pattern slightly different. The average percentage of students
responding correctly ranges between 37% and 48% (Indonesian) and between 28% and 52% (Japanese). Furthermore, students’ level
of sound understandings of the concepts is lower than their understandings on either the macroscopic level or the submicroscopic
level. It is found that students have great difficulties with and hold some alternative conceptions of the concepts of homogeneous
mixtures, phase changes from solid to liquid, and phase changes from solid to gas. The study has implications, for example,
the use of several routes to meaningful learning and the careful use of technical words. 相似文献
14.
This study was designed to compare the effects of Team Assisted Individualization (TAI) and Student Teams-Achievement Divisions
(STAD) on fourth grade students’ academic achievement in and attitudes towards mathematics. Seven classes of a school were
randomly selected for this experimental study. Two of these were given instruction through TAI; two through STAD, and the
remaining three were treated as a control group. For the purpose of the data analysis regarding academic achievement, the
3 X 1 covariance analysis was used to compare the groups. As a result of this comparison, both the TAI and STAD methods were
found to have positive effects (d = 1.003 for TAI and d = 0.40 for STAD) on students’ academic achievement in mathematics. The pairwise comparisons showed that the TAI method had
a more significant effect than the STAD method. The scores for the attitude towards mathematics were analyzed by using non-parametric
statistics. As a result of this analysis, no significant difference was observed regarding students’ attitudes towards mathematics. 相似文献
15.
16.
Due to the growing number of students from populations underrepresented in the sciences, there is an intensified need to consider
alternatives to traditional science instruction. Inquiry-based instructional approaches provide promise and possibility for
engaging underrepresented students in the activities of science. However, inquiry-based instruction without culturally relevant
pedagogy and instructional congruency, may not be sufficient to support non-mainstream students in science learning, and may
even serve to challenge students’ cultural ways of knowing. This conceptual paper suggests that aligning reform efforts in
science education to the field of multicultural education would buttress efforts to reach underrepresented student groups
in science. This includes providing culturally relevant instruction and instruction toward making the assumptions of science
explicit, in particular. To this end, this paper draws from literature in multicultural education to propose that deconstructing
science through instruction in NOS may support Latino, African American and English language learning students in science
learning. 相似文献
17.
Teaching students how to conduct authentic scientific inquiry is an essential aspect of recent science education reform efforts.
Our National Science Foundation-funded GK-12 program paired science graduate students—fellows—with secondary science teachers
in order to enhance inquiry-based instruction. This research examined the roles of the fellows, teachers, and school culture
in the implementation of inquiry and the fellows’ conceptions of classroom inquiry versus that in their own research. Qualitative
data were collected for two academic years. Overall, the classrooms shifted toward a more inquiry-oriented approach over the
academic year. Several aspects of school culture influenced inquiry implementation. Fellows described their research as similar
in overall structure but less constrained by known concepts, less guided by mentors, and more in-depth than that of secondary
school students. The teacher-fellow scientist partnership is a potentially effective professional development model to create
positive and lasting change within the science classroom. 相似文献
18.
This survey study explored high school science teachers’ challenges and needs specific to their growing English language learning
(ELL) student population. Thirty-three science teachers from 6 English as a Second language (ESL)-center high schools in central
Virginia participated in the survey. Issues surveyed were (a) strategies used by science teachers to accommodate ELL students’
special needs, (b) challenges they experienced, and (c) support and training necessary for effective ELL instruction. Results
suggest that language barriers as well as ELL students’ lack of science foundational knowledge challenged teachers most. Teachers
perceived that appropriate instructional materials and pedagogical training was most needed. The findings have implications
for science teacher preservice and inservice education in regard to working with language minority students.
相似文献
| Jacqueline T. McDonnoughEmail: |
19.
Sara Tolbert 《Cultural Studies of Science Education》2011,6(1):251-263
In this paper, I present a critical review of the recent book, Science Education as a Pathway to Teaching Language Literacy, edited by Alberto J. Rodriguez. This volume is a timely collection of essays in which the authors bring to attention both
the successes and challenges of integrating science instruction with literacy instruction (and vice versa). Although several
themes in the book merit further attention, a central unifying issue throughout all of the chapters is the task of designing instruction which (1) gives students access
to the dominant Discourses in science and literacy, (2) builds on students’ lived experiences, and (3) connects new material
to socially and culturally relevant contexts in both science and literacy instruction—all within the high stakes testing realities of teachers and students in public schools. In this review, I illustrate how the authors of these essays effectively address this formidable challenge through research
that ‘ascends to the concrete’. I also discuss where we could build on the work of the authors to integrate literacy and science
instruction with the purpose of ‘humanizing and democratizing’ science education in K-12 classrooms. 相似文献
20.
Cassie Quigley Khemmawadee Pongsanon Valarie L. Akerson 《Journal of Science Teacher Education》2010,21(7):887-907
There have been substantial reform efforts in science education to improve students’ understandings of science and its processes
and provide continual support for students becoming scientifically literate (American Association for the Advancement of Science
in Benchmarks for science literacy, Oxford University Press, New York, 1993; National Research Council in Mathematics and science education around the world, National Academy Press, Washington DC,
1996; National Science Teachers Association in NSTA position statement 2000). Despite previous research, it is still unclear whether young children are actually developmentally ready to conceptualize
the ideas that are recommended in the reforms (Akerson V, Volrich M (2006) Journal of Research and Science Teaching, 43, 377–394). The purpose of this study was to explore how explicit-reflective
instruction could improve young students’ understanding of NOS. During an informal education setting, the authors taught NOS
aspects using explicit-reflective instruction. Overall the students participating in the program improved their understanding
of the target aspects of NOS through use of explicit reflective instruction. However, the levels of improvement varied across
different aspects. Students improved the most in their understanding of the tentative nature of science and the roles of observation
in scientific work, although there was still some confusion regarding the distinction between observation and inference. More
work needs to be done exploring these specific topics and the role explicit reflective practice can play in identifying the
particular problems students have in distinguishing these constructs. 相似文献