Characteristic of Wave and Magnet Textbooks ( WMT ) with RVGM-BASED to Train Student ’ s Critical Thinking Skills at Vocational High School

This research constitutes about the characteristic of WMT with RVGM-based to train Student’s critical thinking skills at vocational high school. The observational problem is how characteristic of WMT with RVGM-based to train Student’s critical thinking skills at vocational high school? This problem is enlightened deep two observational questions. First, what Binds WMT with RVGM based application example comprising principle wave and magnet that train student’s critical thinking skills? Both of, how patterns to writing WMT with RVGM-based to vocational high school? This research constitutes development research binds textbooks, by use of mixed method exploratory model, which is gathered qualitatives data, then builds draft Physics Textbooks to becomes books validated ready. The subject in observational it is WMT with RVGM based that can train Student’s critical thinking skills at vocational high school. Meanwhile, its respondent is student braze XI at vocational high school. Data collecting tech is observation, questionnaire, essay, and document. Observational data to be described qualitatively. Result observational to point out that WMT with RVGM-based application example comprising principle Wave and magnet that train Student’s critical thinking skills; and has given writing pattern, which has chapter heading thread, chapter sub title, the breakdown of material, trifling example, summary, ability quiz problem, and literature.


INTRODUCTION
Science education have essential role in upgrade education according to education daring at globalization era.One part of science is physics that's very important.Physics reality ranges two a part, which is physics as product and physics as process.Physics as product covers a group comprise of science facts, concepts, and physics principles.Physics as process cover skills and proprietary attitude by scientist to get and develops physics product.That skill constitute process skills, meanwhile proprietary attitude by scientists is known as scientific attitude (BSNP, 2006).
Student not only being given by fact and concept, but student also being trained deep find fact and concept via processes and scientific attitude.It makes physics learning at schooled according to curriculum implement 2013 one utilizes scientific' approach in processes its learning (kemdikbud, 2014).Scientific Approach can be said as process of learning that guide student to solve problem with ripe planning activity, thrifty data collecting, and data analysis to result one conclusion (Abidin, 2014).Learning with Scientific Approach can push student critical thinking, analytical, and correct deep identifies, understand, solving problem, and applies learning material (Hosnan, 2014).
One of study international hits cognitive ability student which is TIMSS (Trends in Mathematics and Science Study) one that arranged by IEA (International Association for the Evaluation of Educational Achievement).TIMSS'S result 2015 on Physics area points out Indonesia to get average value 397 where assesses it lies under international average value which is 500.Based on data percentage average right answer for science content and domain cognitive in particular Physics, percentage is answer is right on understanding problem ever higher as compared to percentage answer is right on implemented problem and reasoning.
Understanding, implement, and reasoning aspect in cognitive ability domain as one is applied on TIMSS can be utilized to point out ability profile thinks student.Understanding and implement aspect includes in ability of basic think.Meanwhile reasoning aspect includes in high order thinking skills, critical thinking skills constitute one of form of high order thinking skills.Base TIMSS'S result therefore gets to be said that critical thinking skills Indonesian student still low.It can happen since deep student learning process less is stimulated to increase critical thinking skills.
Critical thinking is one part of high order thinking skills that gets convergent character.Ennis (1985) have developed skills fledged list critical thinking skills one cover: in focus on question, argument analysis, and assess is source credibility.Besides this specific skill, critical thinking also involves common traits of whereabouts situation is approached.Once more, Ennis has developed list that comprehensive who ranges to become gets open ended think, try to be informed with every consideration, and with regarding situation entire (Ennis, 1985).
BadanStandar Nasional Pendidikan (BSNP) 2010 states that there are eight competencies and / or skills that must be possessed by the human resources of the 21st century One of the eight competencies are Critical-Thinking and Problem-Solving Skills which Including critical, lateral, and systemic thinking skills, especially in the context of problem solving.Therefore, critical thinking skills become very important for students trained to compete with the Human Resources world wide.The process of constructing this critical thinking skill will be easier to do if the physics learning is done contextually for the students.Contextual learning is a concept of learning that emphasizes the interrelationship between learning materials with real life, so that students are able toconnect and apply the competencies of learning outcomes in everyday life (Mulyono, 2012: 40).Contextual learning can be supported by various contexts provided by teachers, including through the teaching materials used.Unfortunately, the availability of contextual teaching materials that physics is a constraint for teachers.Therefore we need a media that can train students' critical thinking skills.
One of the learning media that can support learning and can train critical thinking skills is textbook.The textbook is a book that is used as a textbook in a particular field of study, which is a standard book compiled by experts in the field for instructional purposes and objectives, complemented by harmonized and understandable teaching tools by the wearers in schools and colleges so as to support a teaching program (Suharjono, 2008: 83).Mahardika (2012: 23) mentions that the book as a teaching material is a book that contains a science of analysis of the results of the curriculum in written form.The material in the textbook is the realization of the material listed in the curriculum.
Textbook can train critical thinking skills students should use the right approach.One approach that can be used is multiple representations approach for learning physics, students are required to master different representations (experimental, graphs, conceptual, formulas, drawings, diagrams) (Mahardika, 2013).According Izsak and Sherin in Mahardika (2012: 43) teaching by involving multiple representations provide a rich context for students to understand a concept.Display textbooks with various representations in the planting of a concept will be able to help students understand the concept learned.This is related to each student has a specific skills that is more prominent than other skills.There are students who are more prominent verbal skills than the spatial and quantitative skills, but some are otherwise.
Results of research by Widianingtiyas (2015) found that research using multiple representations approach in physics learning can improve students cognitive ability.The critical thinking skills is one part of students' cognitive abilities.Lestari Research (2015) shows that the implementation of multiple representation-based learning can improve students' conceptual understanding and critical thinking skills.Likewise, the research conducted by Mahardika (2013) which shows its significant influence between student learning outcomes apply the learning model Quantum-based teaching multiple representations with the model direct learning instruction on teaching physics in high school.
Based on the description, it is necessary to "Development of Wave and Magnet Textbooks (WMT) with RVGM-Based to train student's critical thinking skills At vocational high school ".Associated with the above view, then this study's main purpose is to examine the characteristics of WMT with RVGM-Based To train students' critical thinking skills at vocational high school.
Characteristics of textbooks that can train students' critical thinking skills are textbooks that have a writing pattern based on the teaching-learning procedure, namely: 1) analysis, 2) design, 3) development, 4) evaluation, and 5) revisions (Belawati, 2006).In addition to writing based on the writing procedure, the author of the textbook should also pay attention to the division of each chapter, for example in each chapter is divided into 3 (three) parts namely the introduction, presentation and closing.
Particularly for the characteristics of WMT with RVGM-Based To train students' critical thinking skills, at the end of each chapter needs to be given examples of problems with discussions related to critical thinking skills, and examples of practice questions.Then in the presentation, the concepts of wave and magnet are explained verbal concepts, concept images, and mathematical concepts, all of which are aimed at improving students'critical thinking skills.

METHODS
This research led to the survey research, with emphasis on the study of: 1) early referenced source books; 2) subjects description; 3) The initial conditions text books; and 4) the results of previous research related to representation, critical thinking skills, and are associated with the development of textbooks.Based executed study activity deep observational, therefore study data is descriptive qualitative.The data obtained by observation, questionnaire, document, and literature to various sources, such as: books, scientific journals, articles, observational reporting etc as secondary data.To obtain the results and conclusions of the study, the data obtained were analyzed by descriptive analysis.
Subjects in this research is WMT with RVGM-Based that can train students' critical thinking skills at vocational high school.While respondents in this study are students of class XI vocational high school.

RESULTS AND DISCUSSION
On initial state, spiral spring was stretched, so   The ball is released from rest and eventually stops moving.Means the initial kinetic energy and finally is: Thus, hokum is energy's eternity results:

CONCLUSION
Study to result research points out that Physics Textbooks Wave And Magnet RVGM-Based application example comprisings principle wave and magnet that train critical thinking of student; and has given writing pattern, which is have chapter heading thread, chapter sub title, breakdown of material, trifling example, and ability quiz problem, summary, and literature.
final situation deviate in as much as d of situation initially, therefore spiral spring isstretched in as much as d, so its elastic potential energy is: , ball lies in as much as d above final positioning, so:

1. The Result of The Theory
a) Study Related to Physical Representation The results of previous studies in several countries related to multiple representations, including verbal, image, and mathematical representations, obtained from scientific journals, articles, and research reports indicate that representations can have an impact on conceptual understanding, can enhance students' cognitive abilities, including critical thinking skills.Several research results are shown in Table 1.

Table 1 :
Results of Research Studies Associated with Physical Representation Study Related to Development of TextbookThe results of previous research related to the development of textbooks, informed that the study of textbooks that emphasize the development of textbooks that are multiple representation basis and train critical thinking skills is still very minimal.From the results of the study, it was found that research emphasis on textbook development as presented in table 2.

Table 2 :
Study Studies Relating to Development of Textbooks Textbooks loaded values of characters developed have validity in very high category.2) The textbook is loaded with very practical character values used in Physics learning in grade XI SMAN 1 BatangAnai.3) The textbook is loaded with effective character values used in the implementation of Physics learning in class XI SMAN 1 BatangAnai is characterized by increasing the average value of cognitive, affective average value and psychomotor value of students.Mila Anggela, Masril, andYenni Darvina 2012 The development of textbooks on SETS-oriented Biotechnology materials is appropriate for use in learning for high school students in Class XII.Elina S. Millah, Lukas Suhendra, and Isnawati.2012 Window textbooks on reproduction system materials for the developed RSBI Junior High School are eligible for use in the learning process at RSBI, as they have met the eligibility of the study, the feasibility of the learning outcomes, and the feasibility of the students' responses.Habibatul Barroh, Endang Susantini, and Nur Ducha c) Studies Relating to Critical Thinking Skills Previous research results relating to training and enhancing critical thinking skills, informed that the application of textbook learning and study that emphasizes the effort to practice critical thinking skills is still very rare.From the results of the study, it was found that research emphasis on improving critical thinking skills is presented in Table 3. Table 3: Research Studies Associated with Critical Thinking Skills