International Journal of Science and Applied Science: Conference Series
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Development of problem-based learning model with metacognitive strategy to improve students’ problem-solving ability
Full text linkThis research was conducted to: examine the problem solving ability of students in mathematics education FKIP UNS, (2) develop problem-based learning model with metacognitive strategy, (3) examine the effectiveness of problem-based learning model with metacognitive strategy. Three methods were used in this research: descriptive quantitative, research and development (RnD), and experimental method. The development method used 4-D model which consists of four phases: define, design, develop, and dessimenete. Experimental method was conducted to examine the effectiveness of learning model developed. The population in this research is all students of mathematics education FKIP UNS, while the sample used is students who took the Basics Matematics course. The data collections were used in this research: test, validation sheet, and observation sheet. Descriptive quantitative analysis technique was used to analyze the instrument development. Quantitative descriptive analysis was used to describe the validators’ mark result for the learning instruments. Descriptive quantitative analysis was used to analyze the problem-solving ability test result that described by percentages. The efectiveness of model development was analyzed by T-test method. The results of this study showed that: (1) students’ problem solving ability of mathematics education FKIP UNS particularly in non-algoritmic problems is still not good, but in algoritmic problems is good enough, (2) in the development of problem-based learning model with metacognitive strategy learning instruments, three instruments that qualify valid, practical, and effective there are: Learning Plan, Students’ Activity Sheet, and Students’ Teaching Material
Virtual Lab Experiment: Physics Educational Technology (PhET)Photo Electric Effect for Senior High School
Full text linkThis paper introduced these Physics Educational Technology (PhET) Simulation and demonstrated their utility for Senior High School Students. The PhET simulations are very involved, interactive animated environments that create a unique opportunity for students. In each case, we demonstrate that discussion simulations are more productive, for developing student conceptual understanding for photo electric effect than traditional discussion without simulations. During the discussion with PhET simulation, students can construct their understanding about concepts photo electric effect within this framework. Students learn by building on their prior understanding through a series of constrained and supportives exploration. The simulations support an interactive approach and constrain students productively
The compatibility analysis of subject matter description with basic competence at science textbook for 7th grade of junior high school
Full text linkThe aim of this research is to analyze the quality of science textbooks for 7th grade of Junior High School in Bandung City. This research use content analysis method and data analysis with quantitative descriptive analysis technique. The compatibility analysis of subject matter description with basic competence use instrument which adopted from the instrument of BSNP and based on three indicators, (1) completeness, (2) broadness, and (3) deepness. Completeness based on the presentation of subject matter, broadness based on the presentation of concept, definition, procedure, or example which support to the subject matter, and deepness based on subject matter explanation. The samples are one electronic textbook (BSE), be code in A and two non-electronic textbooks (non-BSE), be code in B and C. The samples selected by purposive sampling technique. Analysis result shows that the completeness of book A, B, and C are 100%, 96,15%, and 96,15% consecutively. The broadness of book A, B, and C are 100%, 88,46%, and 84,62% consecutively. The deepness of book A, B, and C are 92,31%, 88,46%, and 73,08% consecutively. So, book A (BSE) have better quality than book B and C (non-BSE)
Analysis of student’s achievement motivation in learning chemistry
Full text linkThe aim of the study is to determine the effect of student’s achievement motivation toward learning chemistry. This research was conducted at SMK Kesehatan Rahani Husada. The descriptive method was used in this research. The data was collected using test for student’s cognitive achievement and questionnaire for achievement motivation. Data was analyzed using descriptive analysis techniques. The results show that achievement motivation on XI grade of SMK Kesehatan Rahani Husada students was in the category of achievement motivation “high” at 47,54%. Moreover, achievement motivation tends effect is random to student’s achievement
Integer 1/0 Knapsack Problem Dynamic Programming Approach in Building Maintenance Optimization
Full text linkThe most common problem in urban areas is the high public demand and the limited provision of housing. In meeting the needs of affordable housing for low income communities, the Government of Indonesia implements Rusunawa Project. Object of this research is Pandanarang Rusunawa. Rusunawa Pandanarang is one of the vertical housing in Cilacap that is facing deterioration issue and needs good maintenance management. This study aims at insetting priority and optimizing maintenance plan due to limited funds (limited budget) and the amount of damage that must be repaired.This study uses one of the optimization methods of Dynamic Programing on the application of Integer 1/0 Knapsack Problem, to determine an schedule the maintenance activities. The Criteria that are used such as: the level of building components damage and the level of occupants participation. In the first criterion, the benefit (p) is the percentage of damage that is fixed with the cost (w). While on the second criterion, the benefit (p) is the percentage of occupant participation rate on the maintenance activities with the cost (w). For the budget of Rp 125.000.000, 00, it was obtained from the simulation that the value of the optimum solution on the first criterion at the 7th stage of 71.88% with total cost Rp 106.000.000, 00. At the second criterion, the value of the optimum solution at the 7th stage of 89.29% with total cost Rp 124.000.000, 00
Using Spreadsheet Modeling in Basic Physics Laboratory Practice for Physics Education Curriculum
Full text linkPhysics is one of a branch of science which uses much of mathematical concept. Usually, the concept of physics is expressed in a mathematical equation; it will make physics easier to be understood. Therefore, the students need to understand about mathematical modelling to help them understand physics. Students who take fundamental physics and physics laboratory course required to understand the concept of feedback that is mathematically expressed in differential equations. However, most of the students have not been taught the concept of differential equations at early semester. Therefore, we are interested in reviewing the use of mathematical modelling with a spreadsheet in the case of feedback that is integrated with laboratory practice. The results of this study indicate that students gave positive perceptions and improve their ability in understanding the concept of feedback that is mathematically expressed in the differential equation
Student’s concept ability of Newton’s law based on verbal and visual test
Full text linkNewton’s law is a foundamental concept that needs to be studied and understood correctly. Concept presentation in different representation will help the student to understand the concept that being learned. Student’s ability to present Newton’s law in different representation indicate the quality of student’s concept ability. This research aims to describe student’s concept ability of Newton’s laws based on the student’s ability of verbal and visual (pictorial and graphical) problem solving. The method of this research is qualitative with the sample of 71 students of physics education from IKIP PGRI Madiun (14 students) and Sebelas Maret University (57 students). The instrument used in this research were conceptual test and interview. The result showed that more student provide incorrect answer to the physics conceptual problem. Percentage of the incorrect answer for First Newton’s law problem is 69 %, Second Newton’s law problem is 71 %, and Third Newton’s law problem is 76 %. The students do not understand the language of physics correctly, they undergo incorrect physics concept, and so they only understand few physics concept of Newton’s law
Profile of Visual-Spatial Intelligence In Solving Geometric of 11th Grades Viewed From Gender Differences
Full text linkVisual-spatial intelligence is one of the multiple bits of intelligence that important to solve a mathematics problem, especially in geometry. This present research investigates the profile of students’ visual-spatial intelligence. This research focuses on analysis and description of students’ visual-spatial intelligence level generally and its aspect when solving the geometric problem. Visual-spatial intelligence aspect, there is imagination, pattern seeking, problem-solving, and conceptualization. Qualitative research with case study strategy was used in this research. The subject in this research involved 12 students of 11th grades chosen with purposive sampling. Data in this research were students’ visual-spatial intelligence test result and task based interviews. They were asked to complete visual-spatial intelligence test before interview. The data was analyzed based on visual-spatial intelligence aspect of female and male students. The results of this research show that female students have better pattern seeking and conceptualization. Meanwhile, male students have better in imagination and problem-solving
Analysis of acid-base misconceptions using modified certainty of response index (CRI) and diagnostic interview for different student levels cognitive
Full text linkThe authors in this paper draw attention to the importance of an instrument that can analyze student’s misconception.This study described the kind of the misconception in acid-base theory, and the percentage students’ misconception occur in every subconcept of acid-base theory. The design of this study is a descriptive method, involved 148 of 11th grade science students from Senior High School, which divided into two classes are high cognitive and low cognitive. Further analysis of using Modified Certainty of Response Index (CRI) as a diagnostic instrument is used to explore misconception which in that test included evaluating only content knowledge with considering the reason behind the students' choice of response and their certainty of response in every question. The result of data analysis has shown that misconception occurred in high cognitive class, gained 43,86% and misconception occurred in low cognitive class, gained 24,63%. Based on the diagnostic interview has shown that misconception occurred in students due to students does not understand the concept well and they related the one concept to the other concepts with partial understanding, the result students make the failed conclusions. The type of misconception occurred is a conceptual misunderstanding. According to the data analysis showed that Modified Certainty of Response Index (CRI) is effective used to analyze students’ misconceptions and the diagnostic interview is effective used to know the reasons that caused students which having misconceptions
The Effect of WhatsApp Messenger As Mobile Learning Integrated with Group Investigation Method of Learning Achievement
Full text linkThe purpose of this research was determined the effect of application WhatsApp Messenger in the Group Investigation (GI) method on learning achievement. The methods used experimental research with control group pretest-postest design. The sampling procedure used the purposive sampling technique that consists of 17 students as a control group and 17 students as an experimental group. The sample in this research is students in Electrical Engineering Education Study Program. The experimental group used the GI method that integrated with WhatsApp Messenger. The control group used lecture method without social media integration. The collecting data used observation, documentation, interview, questionnaire, and test. The researcher used a t-test for compared the control group and the experimental group’s learning outcomes at an alpha level of 0,05. The results showed differences between the experiment group and the control group. The study result of the experimental higher than the control groups. This learning was designed with start, grouping, planning, presenting, organizing, investigating, evaluating, ending’s stage. Integration of WhatsApp with group investigation method could cause the positive communication between student and lecturer. Discussion in this learning was well done, the student’s knowledge could appear in a group and the information could spread evenly and quickly