IDEAS: A Qualitative Inquiry into Project-Based Learning

As waves of the Global Educational Reform Movement, what Sahlberg (2015) identifies as GERM, still ripple around the world pushing for competition, standardization, the focus on the core subjects, and test-based accountability some schools like IDEAS choose what Hargreaves and Shirley (2012) call The Forth Way towards inspiration and innovation with their project-based learning pedagogy. IDEAS is a small public high school in Sheboygan, Wisconsin and a member of Ted Sizer’s Coalition of Essential Schools (CES). Our qualitative inquiry explores the implications of project-based learning on IDEAS’ students, teachers, academic program and school community. Data came from direct observation, interviews, curriculum documents, and teaching and learning artifacts. Our research informs IDEAS about the impact of their project-based learning pedagogy and validates its significance as part of their curricular program. It demonstrates that democratic principles are at work in some US schools, despite so many instances to the contrary. In the age of GERM this single-case study provides research-based evidence that alternative pedagogical methods and curriculum programs are potentially viable alternatives to many of the curriculum practices commonly found in today’s schools

Detection of human influence on a new, validated 1500-Year temperature reconstruction

Climate records over the last millennium place the twentieth-century warming in a longer historical context. Reconstructions of millennial temperatures show a wide range of variability, raising questions about the reliability of currently available reconstruction techniques and the uniqueness of late-twentieth-century warming. A calibration method is suggested that avoids the loss of low-frequency variance. A new reconstruction using this method shows substantial variability over the last 1500 yr. This record is consistent with independent temperature change estimates from borehole geothermal records, compared over the same spatial and temporal domain. The record is also broadly consistent with other recent reconstructions that attempt to fully recover low-frequency climate variability in their central estimate. High variability in reconstructions does not hamper the detection of greenhouse gas-induced climate change, since a substantial fraction of the variance in these reconstructions from the beginning of the analysis in the late thirteenth century to the end of the records can be attributed to external forcing. Results from a detection and attribution analysis show that greenhouse warming is detectable in all analyzed high-variance reconstructions (with the possible exception of one ending in 1925), and that about a third of the warming in the first half of the twentieth century can be attributed to anthropogenic greenhouse gas emissions. The estimated magnitude of the anthropogenic signal is consistent with most of the warming in the second half of the twentieth century being anthropogenic

A cascade of magnetic field induced spin transitions in LaCoO3

We present magnetization and magnetostriction studies of the insulating perovskite LaCoO3 in magnetic fields approaching 100 T. In marked contrast with expectations from single-ion models, the data reveal two distinct first-order spin transitions and well-defined magnetization plateaux. The magnetization at the higher plateau is only about half the saturation value expected for spin-1 Co3+ ions. These findings strongly suggest collective behavior induced by strong interactions between different electronic -- and therefore spin -- configurations of Co3+ ions. We propose a model of these interactions that predicts crystalline spin textures and a cascade of four magnetic phase transitions at high fields, of which the first two account for the experimental data.Comment: 5 pages + supplementary materials, 5 figure

The effects of pre-retirement factors and retirement route on circumstances in retirement: findings from the Whitehall II study

Retirement has traditionally been seen as the beginning of old age. It has been depicted as mandatory expulsion from the workforce and seen to mark the transition to a period of ill health and poverty. Such ideas and associations are however being challenged in the developed world by socio-demographic changes in retirement and old age. People in the United Kingdom as elsewhere are living longer and healthier lives, and many older people have access to non-state incomes that afford them a reasonable standard of living in retirement. There is however still concern that inequalities persist into old age. Data from two waves of the British Whitehall II study have been used to assess the relative effects of occupational grade, psychological and general health during working life, and retirement patterns or pathways on activities, attitudes to health and income in retirement. The results show that the majority of the sample reported good health, financial security and overall satisfaction with life, but with observable inequalities. Regression analyses demonstrate that pre-retirement circumstances generally had a greater effect on later life than the retirement route or pathway. Retirement no longer represents a drastic break between working and post-work life but rather, the results suggest, there are continuities between the two periods. It is concluded that the main causes of inequalities in retirement are work-based rather than in retirement itself