World Journal of Chemical Education最新文献

{"title":"The Extent to Which e-Learning is Being Utilized in Teaching the Islamic Education Curriculum in Ma'an Governorate Schools as Viewed by the Teachers","authors":"Baker S. Mawajdeh, Eyad Garalleh, Ahmad Al Khattab, Mansour H. Talhouni, Abdullah Mara’yeh","doi":"10.5430/wje.v12n4p35","DOIUrl":"https://doi.org/10.5430/wje.v12n4p35","url":null,"abstract":"This study aimed at revealing the extent to which e-learning is used in teaching the Islamic Education curriculum in the schools of Ma'an Governorate from the teachers' point of view. In order to achieve this, the researchers developed a questionnaire consisting of (20) items. The validity and reliability of the questionnaire were verified, which reached (0.86%). The study sample consisted of (70) male and female teachers. The descriptive survey method was used in order to achieve the objectives of the study. To answer the questions of the study, the arithmetic averages, standard deviations, one-way ANOVA and Scheffe test were calculated. The results showed that the most important teachers’ estimates of the extent to which e-learning is used in teaching the Islamic education curriculum in schools of Ma’an Governorate were as follows in descending order: the reasons for poor usage of e-learning, the availability of e-learning, the ability to choose appropriate e-learning methods, and the reality of using e-learning. Moreover, the results showed that there were no statistically significant differences attributed to the variables of gender and educational qualification. The results also showed the presence of statistically significant differences attributed to the variable of work experience in favor of the group of more than (14) years, in the field of reasons for poor usage of e-learning. The study recommended the necessity of conducting training workshops for new teachers, and providing the necessary infrastructure in the field of e-learning in all schools.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89319111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"pKaH of the Two Conjugate Acids (CH2N5+) and (HN6+) of Two Hypothetical Molecules the Pentazine (CHN5) and the Hexazine (N6) of Azabenzene Series: A Chemical Education Perspective","authors":"R. Sanjeev, R. Ravi, D. A. Padmavathi, V. Jagannadham","doi":"10.12691/wjce-10-3-3","DOIUrl":"https://doi.org/10.12691/wjce-10-3-3","url":null,"abstract":"Extrapolation of a simple straight-line graph is used to calculate the p K aH of two cations (CH 2 N 5+ ) and (HN 6 + ) (eqn. 1 and 2) of two hypothetical molecules pentazine (CHN 5 ) and hexazine (N 6 ). This is achieved by simply an extrapolation of the locus of the plot of p K aH of protonated pyridine, pyridazines, s-triazine and 1,2,4,5-tetrazine versus the number of nitrogen atoms of the cyclic azines. Even well matched p K aH values for these two species were found from the extrapolation of the locus of the plot of p K aH versus average ionization potential (I v /eV) of the neutral azines. This article is useful in graduate research classroom to explain the acid-base properties and to determine the p K aH values.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83460938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Greening Qualitative Organic Analysis: Spot Test to Detect Aromatic Hydrocarbons and Aryl Halides","authors":"Sujata Sengupta, Sharda Mahilkar Sonkar, Shivani Singh, Ankita Duggal, Mamta Siwach","doi":"10.12691/wjce-10-3-4","DOIUrl":"https://doi.org/10.12691/wjce-10-3-4","url":null,"abstract":"Chemistry students in their college laboratory routinely employ qualitative reactivity patterns to identify functional groups of unknown organic compounds. Qualitative organic analysis is therefore very useful for determining the overall structure. Most of the common functional groups can be easily detected by simple color tests that are rapid, simple and routinely performed by the students. However, the detection of aromatic hydrocarbons and aryl halides is still a challenge as there are not many color tests available. The present work highlights the detection of aromatic hydrocarbons and aryl halides by simple modification of their reaction with chloroform. The method is simple, using chemicals that are easily available in the undergraduate laboratory and follows the principles of green chemistry.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90701282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergetic Effect of SDS/GA Mixture on Stability of Aqueous CNT Nanofluid","authors":"Kriti Singh, S. K. Sharma, Shipra Mital Gupta","doi":"10.12691/wjce-10-3-2","DOIUrl":"https://doi.org/10.12691/wjce-10-3-2","url":null,"abstract":"The stability of nanofluid is the main challenge for their heat transfer applications. Stability means that dispersed solid nanoparticles in basefluid such as engine oil, ethylene glycol (EG), water do not aggregate at a significant rate. The addition of surfactant in basefluid is an excellent option to maintain the stability of nanofluid. This research’s major emphasis is in order to make stable nanofluid for thermal applications using different surfactants. Carbon nanotubes (CNT) nanoparticles are dispersed in water (DDW) with the help of SDS, GA and mixed surfactant (mixture of SDS and GA in 50:50 ratio) using a modified-two step method. Results showed that dispersion of CNT in basefluid was better at 1:1 surfactant/CNT ratio, 0.3 wt% of CNT concentration and 180 minutes (SDS), 150 minutes (GA), 90 minutes (mixed surfactant) ultrasonication time. Nanofluid prepared with SDS, GA and mixed surfactant were found to be stable upto about ~90 days, ~150 days and ~200 days, respectively. CNT nanofluid prepared with SDS, GA and mixed surfactant showed 33.9%, 46.3% and 54.3% enhancement in thermal conductivity as compared to DDW, respectively. According to the results, all three nanofluids can be used as a heat transfer fluid, but nanofluid prepared with mixed surfactant is more suitable because it showed higher thermal conductivity enhancement and better stability which are essential for heat transfer application.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"284 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79447226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Pyridine Type Nitrogen (=N-) on Hammett ρ: Invoking the Reactivity-Selectivity Principle: A Chemical Education Perspective","authors":"R. Sanjeev, V. Jagannadham","doi":"10.12691/wjce-10-3-1","DOIUrl":"https://doi.org/10.12691/wjce-10-3-1","url":null,"abstract":"","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76536539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Teachers and Participatory Action Research for Developing Learning Environments","authors":"Chareewat Thawinwong, Wirot Sanrattana","doi":"10.5430/wje.v12n3p17","DOIUrl":"https://doi.org/10.5430/wje.v12n3p17","url":null,"abstract":"This research aims to develop learning environments through Participatory Action Research (PAR) methodology in a specific context of the Department of Electronics, Nong Han Industrial and Community Education College. Three development outcomes are expected: (1) changes in expected and non-expected outcomes of action; (2) action-based learning in the researchers, research participants and the institute and (3) knowledge from the grounded theory. The results are as the followings: 1) there are positive changes in both expected and unanticipated outcomes consisting of the implementation of the co-designated development approaches and the nature of the expected learning environments, 2) the researchers, research participants, and the institute learn about the efficiency of working together, which makes everyone realize how inefficient working alone was in the past, and 3) a body of knowledge gained from practice describes the relationship between the expected changes, and the driving force and resistances to change as well as ways to overcome the resistances.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"197 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76529602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Guidelines for Cross-Cultural Leadership Development of World Class Standard School Principals","authors":"Dhamma Bhisamai, Pramook Chusorn, P. Chusorn, Khwanjai Kaewsaeng, Wudhichai Yaowapho","doi":"10.5430/wje.v12n3p11","DOIUrl":"https://doi.org/10.5430/wje.v12n3p11","url":null,"abstract":"Cross-cultural leaders, are the behaviors or the characters of administrators who were able to manage or administrate people with different thoughts, beliefs, values and practice and combine them to form a single concept of being attentive to their work and trust their leaders to possess good attitudes and work efficiently for their ultimate goal of student development. The current study examines the situations of leadership and the guidelines for cross-cultural leadership development of World Class Standard School principals. The research sample was composed of 359 principals of World-Class Standard Schools in Secondary Educational Service Area Office. The research tool consisted of the 5-level rating scale questionnaire and the focus group discussion form. The data were analyzed by using descriptive statistics and content analysis. The research findings revealed five components rated from the highest to the lowest levels as follows: 1) Communication ( X = 4.24, S.D. = 0.71), 2) Empathy ( X = 4.24, S.D. = 0.73), 3) Conflict Management ( X = 4.22, S.D. = 0.72), 4) Transformational Leadership ( X = 4.21, S.D. = 0.72) and 5) Trust ( X = 4.16, S.D. = 0.74). The guidelines for developing cross-cultural leadership can be summarized as follows: principals should develop communication skills that were expressive, clear, and appropriate to the situations by using rhetorical skills in persuasive speech, exchanging of information between the networks of principals and other organizations, being good mediators, emphasizing teamwork, encouraging the school personnel to have a sense of participation and work successfully in order to achieve the vision of the school, remaining neutral, avoiding conflicts, creating consciousness and friendly atmosphere in the organization. Taking advantage of this research to improve the quality of administration in schools and administrators at all levels.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74260398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Project-Based Learning Towards Collaboration among Students in the Design and Technology Subject","authors":"D. Ibrahim, A. Rashid","doi":"10.5430/wje.v12n3p1","DOIUrl":"https://doi.org/10.5430/wje.v12n3p1","url":null,"abstract":"Teaching Design and Technology that focuses only on the end product had led to students less exposure to collaboration skills in their learning. Therefore, a study that determines the teaching method in applying collaboration skills among students and its effect is required. The two teaching methods used were the ‘doing a project’ method for the control group and project-based learning for the treatment group. A quasi-experimental study was carried out with a nonequivalent control group. Two groups were selected from two different daily schools consisting of 34 students for the control group and 32 students for the treatment group. A pre-test, followed by an intervention for 7 weeks was carried out. After the intervention, a post-test was carried out for both groups. A questionnaire regarding collaboration skills was used in both tests. The data obtained were analyzed descriptively and by inference. The pre-test showed that there was no significant difference in the level of collaboration of both groups. However, the results of the post-test showed that the level of collaboration in the treatment group is significantly higher than in the control group. Thus, the study showed that collaboration can be applied and cultivated among students by using project-based learning. This can be achieved by structured discussion from explicit planning, and student-centered learning activities with teaching and learning aids that support the execution of students’ project work.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79490426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Irregular Verb Acquisition Among EFL and ESL Learners in Cameroon: Peculiarities of Group 4 and 5 Verbs","authors":"Ngasu Betek Etengeneng","doi":"10.5430/wje.v12n3p38","DOIUrl":"https://doi.org/10.5430/wje.v12n3p38","url":null,"abstract":"Acquisition patterns of irregular verbs by Second and Foreign Language learners of English in Cameroon present remarkable peculiarities that emanate from the country’s unique linguistic identity, where French, English and a multiplicity of local languages are spoken. Following on a previous study (see Ngasu Betek 2020) this study documents these peculiarities, but with a focus on Group 4 and 5 irregular verbs, to ascertain the mastery of English irregular verbs. From a population of nine hundred (900) students from six selected schools in Cameroon, samples of their production in English irregular verb usage were collected. The specific classes were Forms One, Three, Five, (of the Anglophone sub-system of secondary education), and Sixième, Quatrième and Seconde students (from the Francophone sub-system of secondary education). Using Simple Random Sampling Technique, completion tasks were administered and the results analysed to identify and map traceable frequency patterns of use by students. A comparative analysis of the two leaner clusters was carried out which revealed ESL and EFL learners of English in Cameroon both exhibited challenges in using irregular verbs either through overgeneralizations or through morphological distortions of irregular verbs especially at the past tense. This paper thus informs on best practices for successful learning, specifically in the acquisition of irregular verbs by L1 and L2 learners in schools in Cameroon.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79107886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coronavirus Era: Implications for Reconceptualization of Curriculum Delivery in Kenyan Primary and Secondary Schools","authors":"C. Mackatiani, S. Likoko, N. Mackatiani","doi":"10.5430/wje.v12n3p29","DOIUrl":"https://doi.org/10.5430/wje.v12n3p29","url":null,"abstract":"The school curriculum encapsulates what a progressive society, based on the pluralist values of liberal democracy, believes its future citizens should know and be able to do. In this respect, the curriculum should serve the immediate and long-term needs of all students. However, COVID-19 has uncovered the inequities that have existed in curriculum and delivery, especially in developing countries. School closures due to COVID-19 have resulted in actual learning wastage. The primary question is: what changes in curriculum and delivery are essential to improving equity and learning access within this pandemic context? Therefore, the study was guided by e-learning theory as advanced by Richard E. Mayer, John Sweller, and Roxana Moreno in 2015. The theory outlines cognitive science principles that describe how electronic educational technology is used and designed to promote effective learning. The theorists advanced that channeling linguistic information through audio while concurrently showing non-text imagery is very effective. The theory applies to this study to suggest combining media to facilitate learning during the pandemic lockdown period. The study also adopted a documentary analysis approach. Documents on curriculum development and delivery were analyzed. In Kenya, the education sector has been struggling with how to adopt online-based solutions for curriculum delivery. Despite this, losses are more significant due to the lack of adequate structures to sustain effective e-teaching and e-learning. The suspension of face-to-face learning in all educational institutions led to \"unfinished learning\" as the learners were not allowed to experience all the understanding they would have had in a typical class. The study might be significant to Kenya and sub-Sahara Africa, as policymakers and curriculum developers would use the findings to formulate curriculum reforms to redress the coronavirus's impact on education. Conclusively, the study recommends the use of e-learning as a mitigation strategy for coronavirus challenges in educational systems.","PeriodicalId":23766,"journal":{"name":"World Journal of Chemical Education","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74240892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}