1,720,954 research outputs found
Effect of Mastery Learning on Senior Secondary School Students’ Cognitive Learning Outcome in Quantitative Chemistry
Get PDFThe cognitive learning outcome of Senior Secondary School chemistry students has been poor over the years in Nigeria. Poor mathematical skills and inefficient teaching methods have been identified as some of the major reasons for this. Bloom’s theory of school learning and philosophy of mastery learning assert that virtually all students are capable of attaining a high degree of learning if given the appropriate, prior and concurrent conditions. This study investigated the effect of mastery learning on senior secondary school students’ cognitive learning outcome in quantitative chemistry. Quasi-experimental control group design was used for the study. Four Secondary Schools were randomly selected and randomly assigned to experimental and control groups. A total of four hundred and one (401) chemistry students were used for the study. Data was collected using a 25-item chemistry achievement test (CAT) drawn from stoichiometry and mole concept. The instrument was pilot tested and Kuder Richardson formula 21 (KR21) was used to establish the reliability coefficient (r = 0.7). Pre-test was administered to both the experimental and control groups to ascertain if the two groups were comparable and have the same entry characteristics before the treatment. A post-test was administered to both groups after two weeks of exposing the experimental group to mastery learning and the control group to conventional teaching method. Data were analyzed using independent sample t-test. The mastery learning group had a higher mean score (= 78.2; s = 9.90) than the control group (= 58.4; s = 16.07). The difference was highly significant (t399 = 14.92; p = 0.00). About sixty nine percent (69%) of the students in the mastery learning group scored 80% and above, a score attainable by only 17.5% of the students in the control group. Similarly, about half (50%) of the students receiving conventional instruction scored between 40% and 49% whereas less than 1% of the students in the mastery learning group were in this group. The effect size was substantial (0.6). The researcher concluded that mastery learning is a very effective method of teaching and better than the conventional teaching method and recommended that chemistry teachers should be encouraged to adopt it in order to enhance the cognitive learning outcome of students in quantitative chemistry. Keywords: Mastery Learning, Quantitative Chemistry, Feedback, Corrective instruction, Cognitive Learning Outcom
Investigation of Proficiency in Supportive Mathematics Topics among Senior Secondary Science Students in Rivers State
Get PDFSupportive mathematics topics are those mathematics topics, learned earlier by senior secondary two (SS II) science students, that can help them succeed in their science subjects and courses. Studies revealed that secondary students have poor mathematical skills. This study therefore investigated students’ proficiency in some supportive mathematics topics as it relates to their gender and the location of their schools. Descriptive research design was adopted. Simple random sampling and stratified sampling were used to select1652 students from 15 rural and 15 urban coeducational public secondary schools in Rivers State. Supportive mathematics Test (r=0.80) was used for data collection. Descriptive statistics and t-test were used to analyse the data at 5%level of significance. The result revealed that the highest mean score in supportive mathematics topics was in Decimal Fraction and Approximation (? =42.65) which is below average, meaning that, their performance in supportive mathematics was poor. There was no significant difference between the mean proficiency scores of male and female students in all the supportive mathematics topics (p>0.05). The mean proficiency scores better than that of rural students. It was recommended among others that students should take their mathematics lessons seriously at all levels of education because the proficiency they acquire from their junior mathematics classes may positively or negatively influence their success in most science subjects and even science courses in higher institutions. of supportive mathematics topics of urban students were significantl
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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