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1. Aspects of the Nature of Science McComas, Clough and Almazroa (1998: 4) described the nature of science as … a fertile hybrid arena which blends aspects of various social studies of science including the history, sociology, and philosophy of science combined with research from the cognitive sciences such as psychology into a rich description of what science is, how it works, how scientists operate as a social group and how society itself both directs and reacts to scientific endeavours. . . Also, the American Association for the Advancement of Science (AAAS, 1989), Matthews (1998: 988) and Driver et al. (1996: 12-15) noted that the understanding of the nature of science was a goal of science education present in most definitions of science literacy. This understanding was communicated within the disciplines of philosophy, history, sociology and psychology of science which could be described as the following three aspects: First, the nature of science is the understanding of some aspects of scientific knowledge: facts, laws, concepts and theories about the natural world. Driver et al. (1996: 42-44) also suggested that the nature of science for students should be presented mainly 1) with the view of the purpose of scientific work – science aims to explain natural phenomena and 2) with the understanding of the nature and status of scientific knowledge. Second, the nature of science is the understanding of the scientific approach to inquiry. This involves an epistemological consideration. The inquiry needs planning and carrying out within a framework of scientific conceptual and theoretical knowledge. The framework could be limited by different understandings of the role of observation, experiments and the relationship between evidence and theory. 50
Third, the nature of science is the understanding of science as a social enterprise. Science is expressed using an interpreted language which refers to the objects, phenomena and events of the natural world. Science operates in its social organization and its mechanisms for receiving, checking and validating knowledge claims. In addition, an awareness of the possible influence of social commitments, values, interpretation and culture that could affect the understanding of science is important. Understanding the nature of science is also identified and presented in three main statements from McComas and Olson’s (1998: 44-48) study of national science education standards documents as: - Scientific knowledge is tentative - Science relies on empirical evidence - Science is an attempt to explain phenomena - New knowledge must be reported clearly and openly - Scientists make ethical decisions - Scientists require: accurate record keeping, replicability and truthful reporting - Scientists are creative - Change in science occurs gradually - Science has global implications - Science is part of social tradition - Scientific ideas are affected by their social and historical milieu. In this study, the nature of science is the understandings of why scientists have to study scientific knowledge, how they study the knowledge and how they can develop the knowledge within a socio-culture. In other words, scientists study science because they aim to explain natural phenomena. The explanation developed stems 51
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THESIS CASE STUDIES OF TEACHING AND
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TABLE OF CONTENTS Page LIST OF TABL
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TABLE OF CONTENTS (CONTINUED) iii P
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TABLE OF CONTENTS (CONTINUED) v Pag
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LIST OF TABLES Table Page 2.1 Struc
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Page 15 and 16: CHAPTER I INTRODUCTION This chapter
Page 17 and 18: led to improvement in the promotion
Page 19 and 20: water worked as food transported wi
Page 21 and 22: suggested peer collaboration for hi
Page 23 and 24: chloroplasts and pigments, the ligh
Page 25 and 26: would like to develop a new teachin
Page 27 and 28: concepts, such as absorption of lig
Page 29 and 30: conceptions, the scope of biology e
Page 31 and 32: 3, and 8. In Grades 11-12, the scie
Page 33 and 34: Table 2.3 Basic Science Content Sta
Page 35 and 36: Table 2.3 (Cont’d) Contents Conte
Page 37 and 38: light energy and chlorophyll 2 H O
Page 39 and 40: 2. Photosynthesis Itself Plants, al
Page 41 and 42: of chlorophyll. The students believ
Page 43 and 44: Up to this point, those previous st
Page 45 and 46: partly because of the biology educa
Page 47 and 48: (Matthews, 1997: 6). Philosophicall
Page 49 and 50: understanding capability of environ
Page 51 and 52: 4. Social Constructivism The Russia
Page 53 and 54: 5. Constructivist-Based Teaching ab
Page 55 and 56: peers, while the control group work
Page 57 and 58: generation to the next” (Cobb and
Page 59 and 60: 2.1) Thai Living Styles Thailand is
Page 61 and 62: focuses prepare them to take the Na
Page 63: culture. First, Thai existing views
Page 67 and 68: democratic view, that the understan
Page 69 and 70: 4. Summary: Integrating the Nature
Page 71 and 72: elationship between one concept and
Page 73 and 74: Brown (2003) used a combination of
Page 75 and 76: Focusing on thinking and encouragin
Page 77 and 78: Which aspect of the nature of scien
Page 79 and 80: teaching photosynthesis needs impro
Page 81 and 82: − encouraging students to partici
Page 83 and 84: The attempt to understand and inter
Page 85 and 86: Figure 3.1 Research Design of the T
Page 87 and 88: was considered to differentiate the
Page 89 and 90: 2.1) Teacher Preparation for Implem
Page 91 and 92: 3. Evaluating Impacts of Photosynth
Page 93 and 94: Figure 3.2 Survey Developmental Pro
Page 95 and 96: 1.2) Advanced Photosynthesis Survey
Page 97 and 98: 1. accessibility - is enabling the
Page 99 and 100: implementation of the teaching inte
Page 101 and 102: Table 3.4 Data Collection Program S
Page 103 and 104: students. The learning culture in t
Page 105 and 106: 1. Surveys: Content Analysis Conten
Page 107 and 108: They were confirmed by the teachers
Page 109 and 110: CHAPTER IV THE PHOTOSYNTHESIS TEACH
Page 111 and 112: structures and functions of chlorop
Page 113 and 114: Therefore, this study focused on us
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from constructivism to socio0cultur
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Sub-stand 1: Living Things and Livi
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stroma. 5.3) Lists of Concept Propo
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c) Light independent (dark) phase
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Figure 4.1 Photosynthesis Concept M
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Lesson 1 ‘Plant food’, aimed to
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Lesson 5 ‘Light independent (dark
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Table 4.1 Photosynthesis Lesson Pla
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Table 4.1 Cont’d Lesson 3. Struct
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Table 4.1 Cont’d Lesson 5. Light
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Table 4.1 Cont’d Lesson 6. Studen
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After the researcher finished devel
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per a week, namely two 60-min perio
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always asked what she really did no
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schooling studying, she studied Phy
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B = blackboard C = instrument cupbo
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Forty nine percentages had partial
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for photosynthesis. Only seven perc
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Table 5.3 Correcting the Introducto
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Mrs. Engka: Right (confirmed). You
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structures might be a metaphor of u
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Table 5.4 Advanced Photosynthesis C
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In her planning for the nature of s
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participating in role play discussi
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5.4) Principle IV: Enabling Student
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inside and outside teaching period.
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Activities 5.6) Principle VI: Encou
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6. Summary of the Border School In
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2. Background Information about Mr.
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Table 5.7 Mr. Vyn’s Students Sele
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Mr. Vyn had his own style of teachi
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5. Mr. Vyn’s Implementation of th
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Mr. Vyn: …No. 4…mineral is plan
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The misconception that CO2, mineral
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Although the students incompletely
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model of chloroplast structure base
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undle-sheath cells. Both cells cont
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Table 5.9 Advanced Photosynthesis C
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However, there was no discussion ab
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change in term of application of ol
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5.4) Principle IV: Enabling Student
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discussion. “The teacher always d
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photosynthesis e.g. dark phase. Als
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2. Background Information about Mrs
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Table 5.12 Mrs. Amp’s Students Se
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laboratory activities and concept m
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misconceptions about plant food, pa
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The misconceptions about plant and
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Table 5.13 Correcting the Introduct
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percentages misunderstood that the
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Table 5.14 Advanced Photosynthesis
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One conception about science demand
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Table 5.15 The Nature of Science of
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Not only relating photosynthesis kn
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the book and summarized the concept
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Cross Case Studies: Implementation
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In case of the teachers e.g. Mrs. A
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students’ own views about plants
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CHAPTER VI SUMMARY, DISCUSSION AND
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5. The students’ understanding of
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learning participation rarely appea
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the students to understand the rela
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the science project for environment
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ecause old knowledge was reinterpre
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Table 6.2 Learning Activities Sugge
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understandings about the light inde
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Therefore, this research suggested
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Amir, R. and P. Tamir. 1995. Propos
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Bell, B. 1998. Teacher development
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Campbell, N. and J. Reece. 2002. Bi
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Duit, R. and D. Treagust. 2003. Lea
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Govindjee, J., T. Beatty, and H. Ge
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Institute for the Promotion of Teac
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Lin, H. and C. Chen. 2002. Promotin
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Merriam, S. 1988. Case Study Resear
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Patton, M. 1990. Qualitative Evalua
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Smith, M. and L. Scharmann. 1999. D
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Von Glasersfeld, E. 1995. Radical C
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APPENDIX A: INTRODUCTORY PHOTOSYNTH
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1. Tick any of these items which ca
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6.5) Plants need carbohydrate for t
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APPENDIX B: ADVANCED PHOTOSYNTHESIS
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5. Tick any item (s) which you thin
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12. Here is a statement about plant
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