Using the Scientific Method to Guide Learning: An Integrated Approach to Early Childhood Curriculum

Researchers and practitioners have become increasingly interested in how early childhood programs prepare young children for science. Due to a number of factors, including educators’ low self-efficacy for teaching science and lack of educational resources, many early childhood classrooms do not offer high-quality science experiences for young children. However, high-quality science education has the potential to lay an important foundation for children’s knowledge and interest in science as well as reinforcing and integrating critical language, literacy, and math readiness skills. This paper examines the current research on science in preschool classrooms and provides suggestions on how to teach science that supports children’s development across domains. Using the scientific method to explore science with young children provides a systematic model for engaging children in observation, questioning, predicting, experimenting, summarizing, and sharing results. These processes encourage children’s use of language, literacy, and mathematics skills in authentic ways. Suggestions are provided for teachers to use the scientific method as their guide for generating scientific discovery in their classroom.     

Serum Paraoxonase (PON1) Activity in North-West Indian Punjabi’s with Acute Myocardial Infarction

Human serum paraoxonase-1 (PON1), an enzyme on HDL prevents oxidation of LDL thereby preventing the development of atherosclerosis. Studies done so far have lead to conflicting results. As studies are lacking in North-West Indian Punjabi’s, a distinct ethnic group with high incidence of coronary artery disease, we determined PONase activity in this population. It has been postulated that sudden lowering of serum PONase may lead to precipitation of acute myocardial infarction. We determined serum PONase activity and lipids in 100 patients each of AMI (within 24 h of onset), stable CAD and 100 age and sex matched healthy controls. These were again determined after 6 weeks in AMI patients. The mean serum PONase activity was lowest in AMI patients (23.26 U/ml) followed by stable CAD patients (102.0 U/ml) where as in controls was highest (179.8 U/ml). In patients with AMI, activity was significantly higher at 6 weeks as compared to that after acute event (49.39 %; p < 0.05). Sudden lowering of serum PONase activity in a population which already has lower activity may be one of the risk factors for development of AMI.     

Effect of cold water immersion on repeat cycling performance and thermoregulation in the heat

Abstract

To assess the effect of cold water immersion and active recovery on thermoregulation and repeat cycling performance in the heat, ten well-trained male cyclists completed five trials, each separated by one week. Each trial consisted of a 30-min exercise task, one of five 15-min recoveries (intermittent cold water immersion in 10°C, 15°C and 20°C water, continuous cold water immersion in 20°C water or active recovery), followed by 40 min passive recovery, before repeating the 30-min exercise task. Recovery strategy effectiveness was assessed via changes in total work in the second exercise task compared with that in the first. Following active recovery, a mean 4.1% (s = 1.8) less total work (P = 0.00) was completed in the second than in the first exercise task. However, no significant differences in total work were observed between any of the cold water immersion protocols. Core and skin temperature, blood lactate concentration, heart rate, rating of thermal sensation, and rating of perceived exertion were recorded. During both exercise tasks there were no significant differences in blood lactate concentration between interventions; however, following active recovery blood lactate concentration was significantly lower (P < 0.05; 2.0 ± 0.8 mmol · l^?1) compared with all cold water immersion protocols. All cold water immersion protocols were effective in reducing thermal strain and were more effective in maintaining subsequent high-intensity cycling performance than active recovery.     

What Factors Determine the Uptake of A-level Physics?

There has been much concern recently in the UK about the decline in the number of students studying physics beyond age 16. To investigate why this might be we used data from a national database of student qualifications and a multilevel modelling technique to investigate which factors had the greatest impact on the uptake of physics at Advanced Level (A-level) in a particular year. Each factor of interest was entered into a separate model, while accounting for prior attainment and gender (both well-known predictors of A-level uptake). We found that factors associated with greater probability of uptake included better attainment in physics (or combined science) and maths qualifications at age 16 in comparison to other subjects, and (for girls only) attending an independent or grammar school. While it is difficult to address these factors directly, the results imply that more needs to be done to improve relative performance at General Certificate of Secondary Education, perhaps by increasing the supply of specialist physics teachers at this level and to overcome the perception (especially among girls) that physics is a particularly difficult subject.     

Exploring the policy implementation paradox: using the Free Compulsory Universal Basic Education (fCUBE) policy in Ghana as an exemplar

This paper uses the Free Compulsory Universal Basic Education (fCUBE) policy implementation in Ghana as an exemplar to explore the apparent disjuncture between policy intentions in theory and outcomes of implementation tasks in practice. Through the critical discourse analysis of a range of policy documents complemented by the analysis of interviews with Ghanaian education officials, the paper investigates the extent to which the ‘free’, ‘compulsory’, ‘universal’ and ‘basic education’ components claimed in the fCUBE policy title are reflected in the implementation process. Owing to its commitment to enhancing the educational opportunities and outcomes of the educationally disadvantaged, the fCUBE policy is viewed as a ‘rights-based policy’ deeply rooted in social democratic values. However, the advent of neo-liberal ideological rhetoric of ‘skills for the world of work’ has triggered the neutralisation of these progressive ideals. This, the paper argues, has led to a significant discursive shift in policy direction and language of implementing the policy.     

Solving problems: young children exploring the rules of the game

This article is not a review of the problem-solving literature but instead explores the idea of children developing problem-solving tactics as learning to applying the ‘rules of the game’, based on Wittgenstein's concept of ‘language games’. The kind of learning under discussion here is not learning of facts. I will not be discussing how we learn to recite the two times table but, rather, the dawning of understanding of what those facts mean: when a child realizes that the two times table divides up the whole universe into sets of either odds or evens. The necessity of accepting the rules of the game in order to perceive relevancy in determining problem-solutions was illustrated by Donaldson's (1992) work with small children. The existence of general rules, and hence generic problem-solving skills, is discussed and a model for problem-solving is suggested. The article concludes with some observations on the role of rule-breaking in discovery and invention. Examples are taken from the author's observations of young children in English classrooms.     

Examining activity-based learning (ABL) practices in public basic schools in the northern region of Ghana

Background: Ghana has been the testing ground for many teaching and learning initiatives over the past 15–20 years. These initiatives, largely funded by donors, have sought to improve learning by introducing and reinforcing valuable teaching skills, materials and approaches, most of them child-friendly, learner-centred and involving activity-based learning (ABL). However, a problem in Ghana, also true of other countries in sub-Saharan Africa, is that whereas efforts over the past few decades have improved access to basic education in both pupil enrolment rates and teacher numbers, educational quality as measured by standardised test scores in key subject areas remains rather low.

Purpose: This article reports on an aspect of a DfID (Ghana) – sponsored research project which examined how the quality of teaching and learning in Ghanaian basic schools could be improved through the utilisation of ABL pedagogy. The current article examines three overarching themes relative to ABL pedagogy, namely how participants conceptualise ABL; ways in which ABL practices reveal themselves in classrooms; and challenges of ABL practices in Ghanaian schools.

Sample: Participants (comprising representatives of Colleges of Education, District Directors and frontline Deputy Directors of Education, headteachers and teachers) were drawn using purposive sampling technique from eight schools from within four districts of the northern region of Ghana.

Design and Methods: A case study approach was adopted for the study. Data collection took the form of semi-structured interviews, focused group discussions and observation of ABL practices and lessons in selected schools. Data analysis was undertaken using a ‘processual analytical approach’ with the view to catching realities of ABL practices in the Ghanaian educational setting.

Results: Our analysis reveals that whereas the literature on ABL emphasises multi-tasking and group work as essential ingredients of ABL pedagogy, the respondents conceptualised this as meaning pupils working on the same activity-related tasks at the same time in groups. Similarly, we found that, ideally, ABL practices reveal themselves through classroom practices such as display of pupils’ work in classrooms, organisation of the seating arrangements of pupils in groups, use of teaching and learning materials, formative assessment and activity-oriented lessons among others. However, in almost all the schools and classrooms we visited, these essential ingredients were missing owing to congestion and lack of furniture and logistics.

Conclusions: We conclude against the backdrop of our findings that ABL techniques can be utilised more effectively in Ghanaian schools if its practices are initially promoted in model schools, for lessons to be learned, and then scaled-up as expertise is established in these model schools.     

Assistance and Accountability in Externally Managed Schools: The Case of Edison Schools,Inc.

Edison Schools, Inc., is the largest and most visible among a growing number of Education Management Organizations that have entered into contracts to manage public schools, including both conventional and charter schools. Edison's approach to managing schools is comprehensive, and it distinguishes itself from most other school improvement strategies by simultaneously addressing both the resources and assistance provided to schools and the accountability systems under which school staff operate. In this article we explore the ways in which the assistance and resources provided by Edison (including diverse professional development opportunities, materials, technology, and other tools), as well as accountability mechanisms (such as monitoring and rewards), have translated into principal and teacher actions, and the factors that facilitated or constrained educators' efforts to implement the Edison design and improve teaching and learning. Drawing on data gathered from extensive interviews, observations, and document reviews collected during a four-year comprehensive study of Edison schools, we demonstrate how Edison intends to promote not only educators' capacity but also their motivation and opportunity to deliver high-quality instruction. We examine variation that occurs across schools as teachers and principals respond to these system-level efforts. In addition, we identify several important predictors of variation in implementation, including the strength of instructional leadership provided by the principal and the presence or absence of district-imposed constraints such as union contract rules.