bluuebunny/crossref_metadata_2025_split huggingface dataset:
Higher order thinking skills students in mathematical statistics course base on revised bloom taxonomy in factual and conceptual knowledge dimension
Authors: Rahayu A , Syah A , Najib A 
Published: June 2021

Abstract
The purpose of this study was to identify Higher Order Thinking Skills (HOTS) in mathematics education study program students in the Mathematical statistics course. HOTS in this study is based on the Revised Bloom Taxonomy which includes analyzing, evaluating and creating, especially in the dimensions of factual knowledge and conceptual knowledge. This research is a qualitative descriptive study. The research subjects were 35 students of the fourth semester mathematics education study program of Al Asyariah Mandar University. The data collection techniques such as essay test and each of which consisted of 3 items of dimension of procedural knowledge and conceptual knowledge, which was C4 (analyzing), C5 (evaluating), C6 (creative) level. HOTS data were obtained from test answers given to students and then analyzed descriptively. HOTS criteria include low, medium, and high. The results of the research on the factual knowledge dimension with a C4 level (analyzing) of 6.7 (medium), a C5 level (evaluating) of 4.6 (low), and a C6 level (creating) of 4.3 (low). Whereas in the conceptual knowledge dimension with a C4 level (analyzing) of 6.9 (medium), a C5 level (evaluating) of 4.7 (low), and a C6 level (creating) of 4.1 (low). In general, students’ HOTS are in low criteria.
Development of attitude assessment instrument in engineering mathematics 1 course to assess discussion on MOOC platform
Authors: Yuniwati I , Yustita A D , Hardiyanti S A , Suardinata I W 
Published: June 2021

Abstract
Affective assessment instruments have been developed, especially those related to attitudes. In engineering mathematics learning 1 through the MOOC platform, it was carried out with discussion. The development of attitude instrument assessment to assess student activity was carried out after learning was complete. This development research used the Plomp Model. The Plomp Model consisted of 5 stages. They were the initial investigative stages, design stage; construction stage; the test, evaluation, revision stages; and implementation stages. Two experts and trials carried out validation were carried out on 100 students. The result of developing an attitude assessment instrument was a questionnaire. The difference from other questionnaires lies in paying attention to the internal continuum interval of attitudes developed by Bloom’s Taxonomy. They were Responding, Valuing, and Organization. Afterward, The instrument is tested for reliability and validity until it is declared to validate each item and the instrument’s reliability in the excellent category. The value of Cronbach’s Alpha instrument is 0.848. The value indicates that the attitude assessment instrument is classified as having good criteria. Then the instrument is implemented in discussion on the MOOC Platform.
Mathematical creative thinking ability of students in treffinger and brain-based learning at junior high school
Authors: Wijayanti K , Khasanah A F , Rizkiana T , Mashuri  , Dewi N R , Budhiati R 
Published: June 2021

Abstract
The purpose of this experiment was to comprehensively examine whether innovative Brain-Based Learning and Treffinger learning was effective for developing mathematical creative thinking ability at junior high school. The research design was a quasi-experimental non-equivalent control-group design. The population was all grade VIII students at Junior High School in the 2019/2020 school year. The samples were two classes determined by a randomized class. Data collection techniques with tests. Data analysis were using the z-test and the t-test. The results of this study were the percentage of students in the class that applied the Treffinger learning achieved classical completeness and the mean of creative thinking ability of students in the class that applied the Treffinger learning was more than the mean mathematical creative thinking ability of students in the class that applied Problem-Based Learning. The percentage of students in the Brain-Based Learning class achieved classical completeness and the mean mathematical creative thinking ability of students with Brain-Based Learning was higher than the students with Problem-Based Learning. There is no significant mean difference between the students’ mathematical creative thinking ability in the class that apply Brain-Based Learning and Treffinger learning. This research concludes that innovative learning Brain-Based Learning and Treffinger learning is effective for developing mathematical creative thinking ability at junior high school.
Content validity analysis on mathematical quantitative literacy instruments in elementary schools
Authors: Anggara D S , Kadir  , Haribowo H 
Published: June 2021

Abstract
This research is part of the development of mathematical quantitative literacy instruments for elementary school students. In this section, the purpose of this study is to analyze the content validity of the instrument. The instruments developed were 40 multiple-choice items constructed from interpretation, representation, calculation, assumptions, analysis, and communication skills. Furthermore, the instrument was assessed qualitatively and quantitatively by 6 experts with assessment aspects including 1) relevance of items to the dimensions of quantitative literacy, 2) relevance of items to item indicators, 3) clarity of items, 4) logicalness of all answer options, 5) fairness the language used, and 6) the functioning of the case descriptions/discourses/figures/tables/graphics in the items. The collected qualitative data were analyzed qualitatively and the collected quantitative data were analyzed using the Content Validity Index (CVI). The results show that 40 items each have a CVI value of more than 0.60 with an average of 0.98, it can be concluded that the items and quantitative literacy instruments for elementary school are valid based on content.
Description of student’s difficulty in understanding online mathematics learning materials
Authors: Ishak H , Sukestiyarno YL , Waluya SB , Rochmad  , Mariani S 
Published: June 2021

Abstract
The Covid-19 pandemic has changed many social structures in society. This also impacts the world of education, where suddenly the learning model that is usually done in schools must be done online. This problem has an impact on student learning outcomes, especially in the field of mathematics. This study aims to examine the problems faced by students in learning during the pandemic period. This research uses descriptive qualitative methods, conducted by interviewing 15 mathematics teachers and observations made to 10 junior high school students. Based on the results of interviews with mathematics teachers, it is found that learning in online classes is very different from learning in class both in terms of student attendance, student learning outcomes, and student activities in the online learning process. Meanwhile, from the results of direct observation with students, it was found that students felt bored and did not understand the material in online classes due to a lack of time to ask questions about teaching materials and absence in online classes partly due to inadequate facilities.
Design of instrument Technological Pedagogic Content Knowledge (TPACK) for prospective mathematics teachers
Authors: Wahyuni I , Zaenuri  , Wardono  , Sukestiyarno Y L , Waluya S B , Nuriana  , Aminah N 
Published: June 2021

Abstract
This study aims to design a measuring tool for Technological Pedagogic Content Knowledge (TPACK), especially for prospective mathematics teachers. This research uses design research and Development (R n D) which refers to the ADDIE development model, which includes Analysis, Design, Development, and Evaluation. Based on the results of expert validation on the TPACK capability instrument, namely the TPACK ability questionnaire instrument and sheets teaching practice observations based on the TPACK aspect are included in the very valid category.
Understanding concept of students in solving derivative problems based on school origins
Authors: Mutia  , Zaenuri  , Wardono  
Published: June 2021

Abstract
This research is based on students’ problems in understanding the concept of derivatives in the differential calculus. Learning derivatives always become a difficulty for students, even for they are in the high school. Learning derivatives is the same as studying something abstract, therefore, if students do not understand the concept well, they will continue to experience learning difficulties when solving the problems. However, conceptual understanding is a basic ability that students must have in order to be able to learn and to solve these mathematics problems. This research was conducted to describe the understanding of the students’ concept in solving derivative problems in the differential calculus topic in terms of their school origins. This research is a qualitative descriptive. The subjects of this study were the fourth semester students in Mathematics Education Program of State Islamic Institute of Curup Academic year 2019/2020 selected by purposive sampling based on school origins. The data collection techniques used were tests and interviews. Furthermore, the data is analysed by reducing data, presenting data, and drawing conclusions. The results showed that based on the school origins, the students have concepts understanding in solving derivative problems, but it had various thinking. It can be seen from the concepts of students in a variety representation. In solving derivative problems, there were still found variety of conceptual understanding and concept errors such as factoring of quadratic equations and grouping the terms in solving derivative algebraic functions.
The differences in mathematics learning outcomes of elementary school teacher education UNNES students in terms of gender and specialization of majors in senior high school
Authors: Nugraheni N , Zaenuri  , Wardono  
Published: June 2021

Abstract
The purpose of this research was 1) to determine the differences in the mathematics learning outcomes between male and female students, 2) to determine the differences in the mathematics learning outcomes of students from mathematics and science, social, language, and vocational majors. The population is the third semester of elementary school teacher education Universitas Negeri Semarang (UNNES) students. Samples were obtained randomly. The authors using non-parametric data tests because the data were not normality distributed. From the 228 data obtained, the Mann Whitney data test obtained the Asymp.Sig. 0.57> 0.05, so the fact that there is no difference in mathematics learning outcomes of elementary school teacher education UNNES students when viewed from gender. However, if it is viewed from the specialization of the major in Senior High School, the Kruskal Wallis data test obtained the Asymp.Sig. 0.001 <0.05, so the fact that there is a significant difference in mathematics learning outcomes of elementary school teacher education UNNES students.
Analysis of students difficulties in mathematical abstraction thinking in the mathematics statistic course
Authors: Nurrahmah A , Zaenuri  , Wardono  
Published: June 2021

Abstract
This study aims to analyze and describe student difficulties in solving mathematical abstraction thinking problems in the Mathematics Statistics subject. This research is qualitative research with the research subjects being students of the mathematics education study program at the University of Indraprasta PGRI Jakarta. The sampling technique used in this study was purposive sampling and the instruments used were documents in the form of the results of the Initial Mathematical Capability test, tests of mathematical abstraction thinking ability, observation sheets, interview guidelines, then analyzed using the triangulation technique. The results showed that for all indicators of students’ mathematical abstraction thinking ability, average overall achievement and based on Initial Mathematical Capability level, on the indicator ‘problem transformation into symbol form’ and ‘process of manipulating symbols’ lower than the indicator ‘making generalizations’ and ‘the formation of mathematical concepts related to other concepts’.
Developing Mathrun with construct 2 on the solid geometry with flat faces for junior high school
Authors: Abrar A I P , Nursalam  , Kusumayanti A , Suharti  , Sriyanti A 
Published: June 2021

Abstract
This study aims to: 1) produce Mathrun with Construct 2 on the Solid Geometry with Flat Faces for Junior High School which is valid, practical, and effective. The subjects of this study were 8th grade students of MTs Madani Alauddin Pao-Pao, Gowa in the 2019/2020 school year. This study used a development model proposed by Borg and Gall with 10 stages, namely: 1) problem analysis; 2) Media Design; 3) Product improvement; 4) Individual Test; 5) Validation; 6) Small Group Test; 7) Repair; 8) Field Test; 9) Repair; 10) Dissemination and Reports. However, due to limited time, funds and personnel, this research was limited to the 9th stage. The data collection instruments used questionnaires, responses and test questions. The validation was carried out by education experts, teachers and students. Based on the results of the validation of the feasibility average score for the development of learning media using the Construct 2 software by educational experts, it was obtained 3.40. The practical aspect based on the teacher’s assessment of mathematics was 3.45 which is good criteria. The score of practicality based on the students’ attractiveness was 3.449 which is very good criteria. Meanwhile, the average learning outcome test is complete. Therefore, it can be concluded that the learning media developed have met the criteria of validity, practicality, and effectiveness.
Implementation of google single sign On (SSO) in the library management system
Authors: Purwinarko A , Hardyanto W , Adhi M A 
Published: June 2021

Abstract
Almost all organizations provide web-based services as an effort to provide excellent services to users, such as a library, academic, financial, and other services. Organizations only need to provide Single Sign-on (SSO) services for their users, and users need one set of credentials (user name and password) to access all organizational services. The SSO service developed is based on the Google Authentication API. This SSO makes communication between systems more effective and efficient.
Development of an information system for measuring the service satisfaction index for education personnel services
Authors: Utami N R , Marianti A , Purwinarko A 
Published: June 2021

Abstract
The evaluation process of implementing the quality system in the Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, is used to maintain the quality system’s continuity with predetermined standards. Therefore, we need an information system to measure the service quality satisfaction index (SIANTIK), which is well-established to obtain accurate, credible, and accountable data for Faculty leaders’ policymaking. Information system development using the RAD method. This information system testing uses the black bock method. The test results show that the system is feasible to use.
Inhibition of breast cancer cell development using Citrus maxima extract through increasing levels of Reactive Oxygen Species (ROS)
Authors: Mursiti S , Amalina N D , Marianti A 
Published: June 2021

Abstract
Excessive Reactive oxygen species (ROS) level can lead to the activation of apoptosis and inhibit metastasis through the NF-κB pathway. Therapeutic approaches by increasing ROS level may be effective strategic in cancer treatment. Citrus maxima (CM) is one of a natural medicinal plant that exhibits cytotoxic effect on several cancer cells. However, the CM extract effect to regulate ROS level remains unclear. Therefore, in this study aims to evaluated the cytotoxic effects of CM extract on metastasis breast cancer MDA-MD-231 cells. Cytotoxic activity of CM extract was evaluated using MTT assay, ROS levels was calculated under flowcytometry. Furthermore, the binding interaction between phytoconstituents and protein that responsible on the ROS metabolic pathway was analyzed under in silico molecular docking. The presence of CM extract increased cells death with IC50 value of 338 μg/mL for 24 h through induction of ROS levels. Molecular docking studies revealed that the hesperidin displayed the best binding energies at -21.4766 (NF-κB) kcal/mol. The binding interaction of hesperidin with the active site of NF-κB protein suggested that amino acid residues (His537, Asp519, Gly407, Gln479, Arg416) might play a role in ROS metabolism. These findings have shown that CM extract inhibited cancer proliferation by increasing ROS levels.
Quantification of polyphenol, antioxidant, and antibacterial from red and purple roselle calyces using maceration extraction under different solvent conditions
Authors: Kusnadi  , Purgiyanti  
Published: June 2021

Abstract
This research was conducted to extract polyphenols, antioxidants, and antimicrobial red and purple roselle calyces (Hibiscus sabdariffa L.) with maceration techniques using different types of solvents. Total polyphenols were determined using the Folin-Ciocalteu method. The antioxidant activity was expressed as the DPPH reduction, and antimicrobial activity were evaluated against the Staphylococcus aureus and Escherichia coli bacterial strains. The most significant extraction yield was obtained using ethanol at a concentration level of 80% in two rosella varieties (red and purple). In contrast, the polyphenol content of purple roselle was relatively higher than that of red roselle. The maximum total polyphenols in the extraction process in purple roselle with methanol 80% (27.60 mg GAE/g), while the minimum phenolic (9.50 mg GAE/g extract) in red roselle with 50% ethyl acetate solvent. The antioxidant activity increased in the antioxidant test, where 80% methanol extract showed the highest scavenging antioxidant activity, 73.84 ± 0.53% and 62.80 ± 1.57% for purple and red roselle calyces. The inhibition zone was obtained against E. Coli (13.45 ± 3.30 mm) on the purple roselle, and the inhibition zone was obtained for S. aureus (11,4 ± 0,04) on the red roselle. It was concluded that red and purple roselle calyces are a prospective source of antioxidant and antimicrobial phenolic compounds.
Species richness, distribution, and phenotype relationship of bamboos in Kecubung Ulolanang Nature Reserve (KUNR) on Batang
Authors: Adriani L R , Ngabekti S , Partaya  
Published: June 2021

Abstract
Bamboos have various benefits and disadvantages. Research on bamboo in KUNR has never been done, so there is a need for research related to species richness, distribution, and kinship relationships. The purposes of this research were to identify species and determine bamboos kinship relationships. Research is useful to provide information of Bamboos in KUNR to the community, BKSDA of Central Java, and subsequent researchers. The data collection method uses the observation method. Species and number of individual data were analyzed qualitatively and quantitatively, determine descriptions, weights at each OTUs, analyzed Margalef species wealth index, Pearson correlation and Cluster analysis. Types of bamboos found included: Gigantochloa apus, Bambusa blumeana, Bambusa vulgaris var. vulgaris, Bambusa vulgaris var. striata, Gigantochloa atriviolaceae, Dendrocalamus asper, Schizostacyum sp, and Schizostachyum silicatum. The bamboo species wealth index in all PALs falls into the bad category, because it has a value of <2.5. The closest bamboos kinship is Bambusa vulgaris var. vulgaris with Bambusa vulgaris var. striata, while the furthest is Bambusa blumeana with Bambusa vulgaris var. vulgaris and Bambusa vulgaris var. striata.
Detecting helminth eggs on the body surface of flies in markets in Makassar
Authors: Jabal A R , Ratnasari A , Ifandi S , Suriawanto N , Wahyudi P , Pisu A J , Tuhuteru F M , Pawane M S 
Published: June 2021

Abstract
Flies as mechanical vectors of disease spread in humans. This study aimed to detect helminth eggs on the flies body surface in markets in Makassar City Market. Flies collected in sale places such as vegetables, chicken and beef, cakes, fish, and trash cans at the market. Then flies and helminth eggs were idemtificated examined in the laboratory for identification of flies and helminth eggs. Flies found throughout markets in Makassar City were Musca domestica, Calliphora spp., and Sarcophaga haemorroidalis. The highest flies number of was Calliphora spp. (n=27) at the fish sale place in Tamalate market. The greatest number of egg helminth was Taenia sp. (n=17) found on the body surface of Chrysomia sp. This study showed that most helminth eggs found on the body surface of Chrysomia sp. compared to other flies.
Biochemical and organoleptic analysis of zicurma herbal medicine towards mass production
Authors: Rudyatmi E , Bintari S H , Sunyoto  
Published: June 2021

Abstract
Zicurma herbal medicine has been prepared from a mixture of Zingiber officinalle, Curcuma xanthorrhiza, and Curcuma domestica. One of the conditions for mass production of Zicurma herbal medicine is the consistency of the active ingredients and additives. This study aims to analyze the continuity of the chemical content and analysis of people’s preference for the Zicurma herbal medicine. This type of qualitative descriptive research. Chemical analysis focused on flavonoid content, antioxidant activity and was complemented by the viscosity. The preference test is focused on the aspects of the product’s physical appearance, packaging and taste. The number of respondents was 30 people. Flavonoid analysis results ranged from 125.5 -126.5 mg/100 gr, antioxidant activity between 7.01 - 7.40%, and, viscosity between 26.09 - 26.99 cP. The number of respondents who really liked drinking Zicurma herbs with sugar concentrations of 4%, 6%, and 8%, namely 3.33%, 36.66%, and 23.33%. The number of respondents who liked to drink the herbal medicine Zicurma with a concentration of 4%, 6%, and 8%, namely, 60%, 50%, and 73.33%. The chemical content of the Zicurma herbal medicine is relatively consistent. Respondents tend to like to drink the herbal medicine Zicurma with a sugar concentration of 6% and 8%.
Medicinal plant of Gunung Prau, Indonesia: exploration and ethno-botanical study
Authors: Abdullah M , Priyono B , Kartijono N E F , Bodijantoro P M H 
Published: June 2021

Abstract
This study aims to obtain information about local people’s knowledge of plant species, both wild in the forest and cultivated by the local community for use as medicine and health. The results of reference tracing will also reveal the potential active ingredients useful in the medical industry based on the identified plant species. This research design is descriptive exploratory. The study was conducted for 8 months. The work steps in this study consisted of 1) preliminary study, 2) determining the area of observation and respondents, 3) exploration of plants in residential and forest areas, 4) interviewing respondents, 5) analysis of research results. The results showed that as much as 51.6% of the explored plants (wild and cultivated) were known to have medicinal properties. Most of the medicinal plants found in the yard, while others in gardens and forests. The people around the slopes of Mount Prau still use several types of plants to treat various diseases. However, it is unfortunate that people’s knowledge about the efficacy and number of types of diseases that can be treated for each plant species is still relatively low.