Investigating the Alignment of Bhutanese Mathematics Teachers’ Planned Approaches Within the Context of a Reformed Curriculum     

Phuntsho Dolma  David Nutchey  James J. Watters  Vinesh Chandra 《International Journal of Science and Mathematics Education》2018,16(3):581-602

Reform of mathematics education has been in focus in many countries including those in major economic transition. This paper reports a segment of a study which was conducted in Bhutan, where a reformed elementary mathematics curriculum has been recently introduced. The reformed curriculum is based on social constructivism and its design has been influenced by the USA’s National Council of Teachers of Mathematics (NCTM) standards. This paper reports upon the planned teaching of a sample of elementary (primary) teachers in their implementation of the reformed curriculum. The data for this part of the investigation were aggregated from a qualitative survey of randomly selected elementary school teachers (N = 72) from 40 schools across the country. A set of 3 analytical rubrics, based on intentions embedded in the curriculum, was developed to analyse the alignment of teachers’ planned sample learning activities with the intentions of the curriculum. Our conclusions are that while the curriculum’s intentions might be meaningfully stated in the curriculum documents, implementation remains problematic because there appears to be a mis-alignment between curriculum intentions and classroom practices. For instance, teachers by not adopting evidence-based approaches recommended in the curriculum document and are continuing to deny students opportunities to achieve deep understanding in achieving national priorities. This paper also argues that the proposed analytical rubrics may be of value for Bhutanese mathematics educators and, with minor modification, educators in other contexts, as they critique planned and actual practices.  相似文献   

Serum and platelet sialic acid in acute myocardial infarction     

P. K. Nigam  V. S. Narain  Naveen Chandra  V. K. Puri  R. K. Saran  S. K. Dwivedi  M. Hasan 《Indian journal of clinical biochemistry : IJCB》1995,10(2):106-109

Blood samples from 39 patients with acute myocardial infarction and 15 healthy controls were analysed for serum and platelet sialic acid. Serum sialic acid levels in patients with acute myocardial infarction were significantly higher than controls (mean 2.7±0.46 μmol/ml Vs. 1.91±0.17 μmol/ml respectively). Levels of serum orosomucoid, an acute phase reactant, containing sialic acid, were also higher in these patients, suggesting a possible non-specific mechanism of increase in serum sialic acid concentration. In contrast, platelets contained significantly less sialic acid in patients with acute myocardial infarction than control (26.73±1.57 nmol/mg protein and 31.97±2.68 nmol/mg protein respectively).  相似文献   

Correlation between chemical components of billary calculi and bile & sera and bile of gallstone patients     

Prasheeda Chandran  Pradeep Garg  Chandra S. Pundir 《Indian journal of clinical biochemistry : IJCB》2005,20(2):81-85

Total cholesterol, total bilirubin, calcium, oxalate, inorganic phosphate, magnesium, iron, copper, sodium and potassium were analyzed quantitatively in gallstones, bile of gall bladder and sera of 200 patients of cholelithiasis (52 cholesterol, 76 mixed and 72 pigment stone patients) and their contents were correlated between calculi and bile and sera and bile in these three type of stone patients. A significant positive correlation was observed between total cholesterol, total bilirubin of calculi and bile, copper of bile and sera of cholesterol stone patients, copper of calculi and bile, total bilirubin, oxalate, magnesium, potassium of sera and bile of pigment stone patients and oxalate and iron of stone and bile, total bilirubin, oxalate, sodium of sera and bile of mixed stone patients. A significant negative correlation was found between magnesium of serum and bile of cholesterol stone patients, oxalate of calculi and bile of pigment stone patients and magnesium of serum and bile of mixed stone patients.  相似文献   

Effect of vitamin E on platelet enzymatic anti-oxidants in the patients of myocardial infarction     

Vivek K. Dwivedi  Mahesh Chandra  P. C. Misra  M. K. Misra 《Indian journal of clinical biochemistry : IJCB》2005,20(1):21-25

Effect of administration of 600 mg. vitamin E each day, for six days, was observed on activity of some of the anti-oxidant enzymes and levels of malondialdehyde (as an index of free radical mediated damage) in the platelets of patients reperfused after myocardial infarction. It has been found that vitamin E administration significantly lowers the level of malondialdehyde in the patients. Vitamin E administration increases the activities of anti oxidant enzymes (viz. superoxide dismutase, glutathione reductase and catalase) tested both in the patients and healthy controls. Vitamin E administration causes general stimulation of anti-oxidant enzyme activities both in healthy persons and the patients, however, lowering of lipid per-oxidation upon administration of vitamin E is specific for patients. These findings exhibit beneficial role of vitamin E administration in the management of the patients reperfused after myocardial infarction.  相似文献   

An undergraduate student flow model: Australian higher education   总被引：3，自引：1，他引：2  

Chandra Shah  Gerald Burke 《Higher Education》1999,37(4):359-375

The probability of completing and the time to complete an undergraduate course are likely to vary by the age and sex of the student, and the field of study undertaken. In this paper a Markov chain is used to model the movement of undergraduates through the higher education system in Australia. Given the age of the student when they commence a course, this model provides estimates of the probability of them completing the course. It also provides estimates for the mean time a student takes to complete the course, and mean time they spend in the higher education system.  相似文献   

An opium alkaloid-papaverine ameliorates ethanol-induced hepatotoxicity: Diminution of oxidative stress     

Ramesh Chandra  Ritu Aneja  Charu Rewal  Rama Konduri  Sujaka K. Dass  Shefali Agarwal 《Indian journal of clinical biochemistry : IJCB》2000,15(2):155-160

In this communication, we show the modulatory potential of papaverine, an opium alkaloid and a well known vasodilator agent on the ethanol-induced hepatic oxidative stress in male Wistar rats. Ethanol treatment (50% v/v) enhanced lipid peroxidation significantly accompanied by a decline in the activities of glutathione peroxidase (G-Px), glutathione reductase (GR) and depletion in levels of hepatic glutathione (GSH). Ethanol administration increased hepatic glutathione-s-transferases (GST). Enhanced lipid peroxidation induced by ethanol was significantly reduced when papverine was coadministered (P<0.05). In addition, the depleted levels of glutathione and inhibited activities of G-Px and GR recovered significantly (P<0.05) levelling off to control values on co-exposure. Papaverine (200 mg/kg bw) effectively antagonised the ethanol-induced lipid peroxidation and impaired glutathione levels and glutathione dependent enzyme systems. Our results suggest that papaverine is an effective chemopreventive agent in the liver and may suppress the ethanol-induced hepatotoxicity.  相似文献   

Role of Intervention on Laboratory Performance: Evaluation of Quality Indicators in a Tertiary Care Hospital     

Rachna Agarwal  Sujata Chaturvedi  Neelam Chhillar  Renu Goyal  Ishita Pant  Chandra B. Tripathi 《Indian journal of clinical biochemistry : IJCB》2012,27(1):61-68

Quality in laboratory has huge impact on diagnosis and patient management as 80–90% of all diagnosis is made on the basis of laboratory tests. Monitoring of quality indicators covering the critical areas of pre-analytical, analytical and post-analytical phases like sample misidentification, sample rejection, random and systemic errors, critical value reporting and TATs have a significant impact on performance of laboratory. This study was conducted in diagnostic laboratories receiving approximately 42,562 samples for clinical chemistry, hematology and serology. The list of quality indicators was developed for the steps of total testing process for which errors are frequent and improvements are possible. The trend was observed for all the QI before and after sensitisation of the staff over the period of 12 months. Incomplete test requisition form received in the lab was the most poor quality indicator observed (7.89%), followed by sample rejection rate (4.91%). Most significant improvement was found in pre- and post-analytical phase after sensitisation of staff but did not have much impact on analytical phase. Use of quality indicators to assess and monitor the quality system of the clinical laboratory services is extremely valuable tool in keeping the total testing process under control in a systematic and transparent way.  相似文献   

Students’ perceptions of a blended web-based learning environment     

Vinesh Chandra  Darrell L. Fisher 《Learning Environments Research》2009,12(1):31-44

The enhanced accessibility, affordability and capability of the Internet has created enormous possibilities in terms of designing, developing and implementing innovative teaching methods in the classroom. As existing pedagogies are revamped and new ones are added, there is a need to assess the effectiveness of these approaches from the students’ perspective. For more than three decades, proven qualitative and quantitative research methods associated with learning environments research have yielded productive results for educators. This article presents the findings of a study in which Getsmart, a teacher-designed website, was blended into science and physics lessons at an Australian high school. Students’ perceptions of this environment were investigated, together with differences in the perceptions of students in junior and senior years of schooling. The article also explores the impact of teachers in such an environment. The investigation undertaken in this study also gave an indication of how effective Getsmart was as a teaching model in such environments.  相似文献   

Letter to the Editor     

Bharat Chandra Rout 《The Educational forum》2013,77(4):295-296

In the Summer 2007 issue of The Educational Forum, the Open Forum article “An Inconvenient Curriculum” by Marcus Ford and Peter Friederici magnificently focused on the nature of curriculum in higher education in an ever-changing environment in the present globalized world. By highlighting the inevitability of a multidisciplinary curriculum largely focusing on the immediate issues of global and regional concerns, that article showed the base of discursive thought in this regard.  相似文献   

Enhancing Research Capacity in Gerontological Social Work     

Chandra M. Mehrotra  Aloen Townsend  Barbara Berkman 《Educational gerontology》2013,39(2):146-163

There is an untapped potential of social work faculty to conduct aging research aimed at enhancing the well-being of older adults. To better exploit this resource, we have designed, implemented, and evaluated a postgraduate training program in aging research. The goal of the program is to build and sustain a community of social work faculty committed to conducting aging research, to incorporating recent advances in their courses, and to engaging their students in aging research. Program design includes an initial institute (which focuses on research methodology, selected content areas, and procedural matters related to preparation and submission of grant applications); ongoing consultation; and a midyear meeting during the intervening year and a follow-up institute that provide the participants with extended opportunities to discuss the proposals they develop. Evaluation data presented in this paper focus on the first two cohorts (who entered in summer 2004 and summer 2005). These data indicate that the program has been highly effective in expanding the pool of faculty engaged in aging research. Lessons learned with regard to program structure, content, recruitment, evaluation, and sustainability are shared.  相似文献