Computer Assisted Learning Media and Decimal Board: How it Impact on Elementary Students’ Concept Mastery?

The lack of students' mastery of decimal fractions has become a current issue among researchers. The comparisin of decimal fraction values was still an obstacle for students. The use of learning media in this study is the Computer Assisted Learning Media and Decimal Board can be a solution to these problems. This study aimed to describe the increase of elementary students’ concept mastery on decimal fractions subject matter. Descriptive-quantitative method with pre-test and post-test was carried out to achieve the research objectives. The subjects in this study were the 4th grade students (22 students) in the East Lombok area. The students' concept mastery was measured using a multiple-choice test instrument of 10 items. The research data were analyzed descriptively and statistically using paired sample t-test. The results showed that students' concept mastery increased after learning (pre-test: 54.5%; post-test: 77.27%). The results of statistical tests using the paired sample t-test also showed that students' concept mastery had increased significantly after learning (p < 0.05). Based on the results of the study, it can be concluded that learning using Computer Assisted Learning Media and Decimal Boards can improve elementary school students' concept mastery on decimal fractions subject matter.

Decimal Multiplication in FPGA with a Novel Decimal Adder/Subtractor

Financial and commercial data are mostly represented in decimal format. To avoid errors introduced when converting some decimal fractions to binary, these data are processed with decimal arithmetic. Most processors only have hardwired binary arithmetic units. So, decimal operations are executed with slow software-based decimal arithmetic functions. For the fast execution of decimal operations, dedicated hardware units have been proposed and designed in FPGA. Decimal multiplication is found in most decimal-based applications and so its optimized design is very important for fast execution. In this paper two new parallel decimal multipliers in FPGA are proposed. These are based on a new decimal adder/subtractor also proposed in this paper. The new decimal multipliers improve state-of-the-art parallel decimal multipliers. Compared to previous architectures, implementation results show that the proposed multipliers achieve 26% better area and 12% better performance. Also, the new decimal multipliers reduce the area and performance gap to binary multipliers and are smaller for 32 digit operands.

Selecting Mathematical Tasks for Assessing Student’s Understanding: Pre-Service Teachers’ Sensitivity to and Adaptive Use of Diagnostic Task Potential in Simulated Diagnostic One-To-One Interviews

Teachers’ diagnostic competences are regarded as highly important for classroom assessment and teacher decision making. Prior conceptualizations of diagnostic competences as judgement accuracy have been extended to include a wider understanding of what constitutes a diagnosis; novel models of teachers’ diagnostic competences explicitly include the diagnostic process as the core of diagnosing. In this context, domain-general and mathematics-specific research emphasizes the importance of tasks used to elicit student cognition. However, the role of (mathematical) tasks in diagnostic processes has not yet attracted much systematic empirical research interest. In particular, it is currently unclear whether teachers consider diagnostic task potential when selecting tasks for diagnostic interviews and how this relationship is shaped by their professional knowledge. This study focuses on pre-service mathematics teachers’ selection of tasks during one-to-one diagnostic interviews in live simulations. Each participant worked on two 30 mins interviews in the role of a teacher, diagnosing a student’s mathematical understanding of decimal fractions. The participants’ professional knowledge was measured afterward. Trained assistants played simulated students, who portrayed one of four student case profiles, each having different mathematical (mis-)conceptions of decimal fractions. For the interview, participants could select tasks from a set of 45 tasks with different diagnostic task potentials. Two aspects of task selection during the diagnostic processes were analyzed: participants’ sensitivity to the diagnostic potential, which was reflected in higher odds for selecting tasks with high potential than tasks with low potential, and the adaptive use of diagnostic task potential, which was reflected in task selection influenced by a task’s diagnostic potential in combination with previously collected information about the student’s understanding. The results show that participants vary in their sensitivity to diagnostic task potential, but not in their adaptive use. Moreover, participants’ content knowledge had a significant effect on their sensitivity. However, the effects of pedagogical content and pedagogical knowledge did not reach significance. The results highlight that pre-service teachers require further support to effectively attend to diagnostic task potential. Simulations were used for assessment purposes in this study, and they appear promising for this purpose because they allow for the creation of authentic yet controlled situations.

Upaya Meningkatkan Hasil Belajar Matematika pada Pembelajaran Pecahan Sederhana melalui Media Kartu Pecahan pada Siswa Kelas VI SDN Temon Kecamatan Trowulan Kabupaten Mojokerto Tahun Pelajaran 2018/2019

In general, students think that Mathematics is the most difficult subject than other subjects, most students are less interested in mathematics because mathematics is a science related to something abstract, so they are less motivated to learn mathematics. For this reason, it is necessary to have an activity that is concrete, interesting and fun in improving student learning outcomes in learning simple fractions through fraction card media for Grade VI students of SDN Temon, Trowulan District, Mojokerto Regency, 2018/2019 Academic Year. Fraction card media is a learning media that researchers created based on the concept of fractions using fraction cards made of bright colored paper and there are fraction numbers in the form of decimals on the left side and fraction forms that are equivalent to decimal fractions on the right side. The number of fraction cards that the researcher made were 36 cards. This research was conducted in the first semester of the 2018/2019 academic year with classroom action research techniques which were carried out in 2 cycles. Based on the data analysis carried out, it was concluded that in cycle I the percentage of student learning outcomes reached 69% and based on the conversion of the minimum completeness criteria set by SDN Temon, Trowulan District, Mojokerto Regency, the percentage of student learning completeness was in the sufficient category, so it is necessary for researchers to continue research in cycle II. In cycle II the percentage of student learning outcomes showed a significant increase, reaching 91%, so it can be concluded that fraction card media can improve student learning outcomes on simple fraction material.

FEATURES OF COMPUTER TRANSLATION OF ENGLISH SCIENTIFIC AND TECHNICAL LITERATURE INTO UKRAINIAN (on the example of texts on physics and engineering mechanics)

The article is devoted to the problem of the quality of computer translation of scientific texts that today is very relevant because of intensive progress and mass using of the Systems of Computer Aid Translation. The research aim was the analysis and comparison of computer translations of English texts on physics and engineering sciences into Ukrainian with using Pereklad.online.ua, Google Translate, PROMT, Pragma. The quality comparison of the texts' computer translations took place according to the parameters taking into account syntactic features, technical adaptation of the text, and correct use of terminological vocabulary. As a result of the research it was found that Google Translate translations which are based on the statistical (phrase-based) method turned out to be better. Google Translate translations took into account the syntactic features of the text and made a little of errors in grammatical forms; the technical adaptation of the text was carried out (the use of correct mathematical records of decimal fractions, signs of mathematical actions, transliteration of units of measurement; equivalent terminological vocabulary was used etc.) unlike another online translators' translations. The following Google Translate translations were improved due to the built-in translation memory system. At the same time the analysis of the Google Translate translation of the text on physics that used terms without unambiguous equivalents in Ukrainian has showed the inability of the online translator to perform the contextual translation. So computer translators can only play a supporting role and be used as the primary translator of standard scientific and technical texts.

PENINGKATAN AKTIVITAS DAN HASIL BELAJAR MATEMATIKA MELALUI PEMBELAJARAN KOOPERATIF TIPE THINK-PAIR-SHARE (TPS) DI KELAS VC SD NEGERI 47 KOTA JAMBI

The purpose of this study are to increase students’ learning activities in the learning process of mathematics by applying the type of Think-Pair-Share (TPS) cooperative learning and to improve students’ learning outcomes in mathematics. This research was carried out in the fifth grade Students in Elemntary School 47 Jambi during the first semester of 2017/2018 Academic Year. The action was carried out in 2 cycles with the subject matter covered in cycle I was about explaining and reducing two fractions with different denominators and in cycle II about multiplication and division of decimal fractions. Data was collected by observation methods using observation sheets and student learning outcomes was collected using tests. The results of the study based on data analysis showed an increase in learning outcomes from 64.29% wich is sufficient category in the first cycle to be a good category in the second cycle with 83.93%. For student learning outcome there was an improvement from 50% with inactive categories to 90% with very active categories.. The results of this study indicate that the application of the Think-Pair-Share (TPS) Cooperative Learning model can be used to improve student learning outcomes.

Peningkatan aktivitas dan hasil belajar matematika melalui pembelajaran kooperatif tipe Think Pair Share di kelas VC SD Negeri 47 Jambi

The purpose of this study are to increase students’ learning activities in the learning processof mathematics by applying the type of Think-Pair-Share (TPS) cooperative learning and toimprove students’ learning outcomes in mathematics. This research was carried out in thefifth grade Students in Elemntary School 47 Jambi during the first semester of 2017/2018Academic Year. The action was carried out in 2 cycles with the subject matter covered incycle I was about explaining and reducing two fractions with different denominators and incycle II about multiplication and division of decimal fractions. Data was collected byobservation methods using observation sheets and student learning outcomes was collectedusing tests. The results of the study based on data analysis showed an increase in learningoutcomes from 64.29% wich is sufficient category in the first cycle to be a good category inthe second cycle with 83.93%. For student learning outcome there was an improvement from50% with inactive categories to 90% with very active categories.. The results of this studyindicate that the application of the Think-Pair-Share (TPS) Cooperative Learning model canbe used to improve student learning outcomes.Keywords: learning process, Think-Pair-Share.