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1.
Cassie Quigley Khemmawadee Pongsanon Valarie L. Akerson 《Journal of Science Teacher Education》2011,22(2):129-149
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 (AAAS, Benchmarks for science literacy, Oxford
University Press, New York, 1993; NRC, National Academy Press, Washington, DC, 1996; NSTA, NSTA position statement: The nature of science, , 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 and Volrich, J Res Sci Teach 43:377–394, 2006). 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
2.
The Importance of Teaching and Learning Nature of Science in the Early Childhood Years 总被引：1，自引：0，他引：1
Valarie L. Akerson Gayle A. Buck Lisa A. Donnelly Vanashri Nargund-Joshi Ingrid S. Weiland 《Journal of Science Education and Technology》2011,20(5):537-549
Though research has shown that students do not have adequate understandings of nature of science (NOS) by the time they exit
high school, there is also evidence that they have not received NOS instruction that would enable them to develop such understandings.
How early is “too early” to teach and learn NOS? Are students, particularly young students, not capable of learning NOS due
to developmental unreadiness? Or would young children be capable of learning about NOS through appropriate instruction? Young
children (Kindergarten through third grade) were interviewed and taught about NOS in a variety of contexts (informal, suburban,
and urban) using similar teaching strategies that have been found effective at teaching about NOS with older students. These
teaching strategies included explicit decontextualized and contextualized NOS instruction, through the use of children’s literature,
debriefings of science lessons, embedded written NOS assessments, and guided inquiries. In each context the researchers interviewed
students prior to and after instruction, videotaped science instruction and maintained researcher logs and field notes, collected
lesson plans, and copies of student work. The researchers found that in each setting young children did improve their understandings
of NOS. Across contexts there were similar understandings of NOS aspects prior to instruction, as well as after instruction.
There were also several differences evident across contexts, and across grade levels. However, it is clear that students as
young as kindergarten are developmentally capable of conceptualizing NOS when it is taught to them. The authors make recommendations
for teaching NOS to young children, and for future studies that explore learning progressions of NOS aspects as students proceed
through school. 相似文献
3.
This study tracked the influence of explicit reflective instructional methods on cultural values, ethical and intellectual development, and the relationship of these with preservice teachers' views of nature of science (NOS). The researchers used the Views of Nature of Science Form B (VNOS B) to describe NOS views, the Learning Context Questionnaire (LCQ) to classify preservice teachers' ethical and intellectual positions using Perry's scheme, and the Schwartz Values Inventory (SVI) to measure preservice teachers' cultural values. The interventions took place in two concurrent courses: a science methods course, and a foundations of early childhood course. The science methods course explicitly emphasized NOS throughout the semester, and the foundations of early childhood course reinforced these ideas through cultural activities that stressed empirical evidence. Analysis of data showed relationships between preservice teachers' Perry positions and responses on the VNOS B with those at higher positions exhibiting more informed NOS views. Relationships between preservice teachers' NOS views and their cultural values were identified, such as those at the dualism position holding achievement more highly for scientists than those at other Perry positions. The values preservice teachers held personally were different from those they held as important for scientists. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 45: 748–770, 2008 相似文献
4.
Valarie L. Akerson J. Scott Townsend Lisa A. Donnelly Deborah L. Hanson Praweena Tira Orvil White 《Journal of Science Teacher Education》2009,20(1):21-40
This paper summarizes the findings from a K-6 professional development program that emphasized scientific inquiry and nature
of science within the theme of scientific modeling. During the 2-week summer workshop and follow up school year workshops,
the instruction modeled a 5-E learning cycle approach. Pre and posttesting measured teachers’ views of nature of science,
inquiry, and scientific modeling. Teachers improved their views of nature of science (NOS) and inquiry by including scientific
modeling in their definitions of how scientists work, the empirical nature of science, and the role of observations and inferences
in science. Their definitions of science expanded from a knowledge-based orientation to a process-based orientation. Teachers
added the use of mathematical formulas to their views of scientific modeling. Using scientific modeling as the central theme
was effective in providing positive influence on teachers’ views of inquiry and NOS. 相似文献
5.
This study assessed the influence of a 3‐year professional development program on elementary teachers' views of nature of science (NOS), instructional practice to promote students' appropriate NOS views, and the influence of participants' instruction on elementary student NOS views. Using the VNOS‐B and associated interviews the researchers tracked the changes in NOS views of teacher participants throughout the professional development program. The teachers participated in explicit–reflective activities, embedded in a program that emphasized scientific inquiry and inquiry‐based instruction, to help them improve their own elementary students' views of NOS. Elementary students were interviewed using the VNOS‐D to track changes in their NOS views, using classroom observations to note teacher influences on student ideas. Analysis of the VNOS‐B and VNOS‐D showed that teachers and most grades of elementary students showed positive changes in their views of NOS. The teachers also improved in their science pedagogy, as evidenced by analysis of their teaching. Implications for teacher professional development programs are made. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 44: 653–680, 2007 相似文献
6.
Valarie L. Akerson Cary A. Buzzelli Jennifer Eastwood 《Journal of Science Teacher Education》2010,21(2):205-214
This paper describes research that compares preservice early childhood teachers’ cultural values and the values they believe
are held by scientists. Using the Schwartz Values Inventory (SVI) (Schwartz (1992) Adv Exp Soc Psychol 25:331–351) preservice early childhood teachers cultural values were assessed, followed by an assessment
of the values they believed were held by scientists. Schwartz postulated that cultural values could be aggregated into 11
domains (universalism, benevolence, tradition, self-direction, stimulation, hedonism, achievement, power, conformity, spirituality,
and security). Paired T-tests indicated significant differences between preservice early childhood teachers’ cultural values from those they believed
scientists held on the domains of power, achievement, stimulation, benevolence, conformity, and security. The discussion explores
the meaning of these results and provides implications for early childhood science teacher education. 相似文献
7.
This study assessed the influence of a reflective, explicit, activity‐based approach to nature of science (NOS) instruction undertaken in the context of an elementary science methods course on preservice teachers' views of some aspects of NOS. These aspects included the empirical, tentative, subjective (theory‐laden), imaginative and creative, and social and cultural NOS. Two additional aspects were the distinction between observation and inference, and the functions of and relationship between scientific theories and laws. Participants were 25 undergraduate and 25 graduate preservice elementary teachers enrolled in two sections of the investigated course. An open‐ended NOS questionnaire coupled with individual interviews was used to assess participants' NOS views before and at the conclusion of the course. The majority of participants held naive views of the target NOS aspects at the beginning of the study. During the first week of class, participants were engaged in specially designed activities that were coupled with explicit NOS instruction. Throughout the remainder of the course, participants were provided with structured opportunities to reflect on their views of the target NOS aspects. Postinstruction assessments indicated that participants made substantial gains in their views of some of the target NOS aspects. Less substantial gains were evident in the case of the subjective, and social and cultural NOS. The results of the present study support the effectiveness of explicit, reflective NOS instruction. Such instruction, nonetheless, might be rendered more effective when integrated within a conceptual change approach. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 295–317, 2000. 相似文献
8.
This case study focused on a preservice teachers' (Morgan) efforts to explicitly emphasize nature of science (NOS) elements in her first‐grade internship classroom. The study assessed the change in first grade students' views of the inferential, tentative, and creative NOS as a result of the explicit instruction. Morgan held appropriate views of NOS, had the intention and motivation to teach NOS, and had a supporting experience explicitly emphasizing NOS embedded in physics content to peer college students. Data sources included weekly classroom observations of explicit NOS science lessons taught by Morgan, interview of Morgan to determine that her views of NOS were informed and that she would have the NOS content knowledge to teach in line with recommended reforms, and interviews of the first‐grade students pre‐ and postinstruction to determine the influence of Morgan's instruction on their views of observation and inference, the tentative NOS, and the creative and imaginative NOS. Data were analyzed to determine (a) the approaches Morgan used to emphasize NOS in her instruction, and (b) students' views of NOS pre‐ and postinstruction to track change in their views. It was found that Morgan was able to explicitly emphasize NOS using three teacher‐designed methods, and that the influence on student views of the inferential, tentative, and creative NOS was positive. Implications for teacher development are provided. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 43: 377–394, 2006 相似文献
9.
Akerson Valarie L. Carter Ingrid Pongsanon Khemmawadee Nargund-Joshi Vanashri 《Science & Education》2019,28(3-5):391-411
Science & Education - Our goal in this article is to provide research-based strategies for embedding Nature of Science (NOS) into science instruction at the elementary level. We thus intend to... 相似文献
10.
This study explored the nature of the relationship between a fifth-grade teacher and an informal science educator as they planned and implemented a life science unit in the classroom, and sought to define this relationship in order to gain insight into the roles of each educator. In addition, student learning as a result of instruction was assessed. Prior research has predominately examined relationships and roles of groups of teachers and informal educators in the museum setting (Tal et al. in Sci Educ 89:920–935, 2005; Tal and Steiner in Can J Sci Math Technol Educ 6:25–46, 2006; Tran 2007). The current study utilized case study methodology to examine one relationship (between two educators) in more depth and in a different setting—an elementary classroom. The relationship was defined through a framework of cooperation, coordination, and collaboration (Buck 1998; Intriligator 1986, 1992) containing eight dimensions. Findings suggest a relationship of coordination, which requires moderate commitment, risk, negotiation, and involvement, and examined the roles that each educator played and how they negotiated these roles. Consistent with previous examinations in science education of educator roles, the informal educator’s role was to provide the students with expertise and resources not readily available to them. The roles played by the classroom teacher included classroom management, making connections to classroom activities and curricula, and clarifying concepts. Both educators’ perceptions suggested they were at ease with their roles and that they felt these roles were critical to the optimization of the short time frames (1 h) the informal educator was in the classroom. Pre and posttest tests demonstrated students learned as a result of the programs. 相似文献