一道竞赛题引出的思考

1 问题的提出 2009年浙江省高二化学竞赛试题第一题选择题: (1)右图画面正中的学者,因为在稀土萃取领域的惊人成就被誉为"稀土界的袁隆平";2008年,他荣获中国科技界最高荣誉"国家最高科学技术奖",他的名字是( )     

Learning disabilities: A piagetian perspective

Research findings in learning disabilities based on Piaget's theory were reviewed. Superimposing the findings of research on Piagetian stages of cognitive development, it appears that during the sensorimotor stage the diagnosis of learning disabilities is difficult. The research findings suggest that there is a delay in cognitive development of learning-disabled children during elementary school years, which corresponds to preoperational, concrete operational, and transition to formal operational stages. From a genetic epistemological perspective, research evidence supports a “developmental lag” approach to learning disabilities. Implications for assessment, curriculum planning, and education are discussed.     

Learning disabilities and bullying: double jeopardy

Independently, learning disabilities (LD) and involvement in bullying each pose a risk for social, emotional, and behavioral problems. Based on the research to date and on the characteristics common to children with LD and children who are bullied, there is reason to believe that children with LD are at increased risk of victimization. However, there is little research on the relationship between LD and bullying. This article presents factors and characteristics that make children and youth with LD vulnerable to bullying. Risk factors and effects of bullying are reviewed. Implications for practice and research are discussed.     

Learning disabilities and ADHD: overlapping spectrumn disorders

Clinical and psychoeducational data were analyzed for 119 children ages 8 to 16 years who were evaluated in a child diagnostic clinic. A learning disability (LD) was present in 70% of the children with attention-deficit/hyperactivity disorder (ADHD), with a learning disability in written expression two times more common (65%) than a learning disability in reading, math, or spelling. Children with LD and ADHD had more severe learning problems than children who had LD but no ADHD, and the former also had more severe attention problems than children who had ADHD but no LD. Further, children with ADHD but no LD had some degree of learning problem, and children with LD but no ADHD had some degree of attention problem. Results suggest that learning and attention problems are on a continuum, are interrelated, and usually coexist.     

Learning disabilities: bringing fields and nations together

This article advocates an approach to supporting students who experience difficulties in learning, irrespective of nosology, particularly in the key areas of literacy and numeracy. In the state of Queensland, Australia, a distinction has been made between students' experiencing learning difficulties and those who have learning disabilities (LD). However, government priorities for improved achievement in literacy and numeracy have focused schools on the performance of all low-achieving students, without regard to diagnostic category. Many are now mobilizing a schoolwide effort that combines resources into a unified plan, using a three-wave approach. The first wave is high-quality classroom teaching, the second is early intervention, and the third is ongoing support for those students who have persistent difficulties, using adapted instruction and intensive tutoring. A further theme is the promise of neuropsychological advances for giving meaning to the underlying impairments of some students--who do have LD--that justifies the provision of adaptations to sustain their learning throughout their schooling and beyond. Throughout this article, the different yet converging understandings of LD in Australia and the United States are tracked, with suggestions made for future research that avoid the problems of operationalizing the definition of LD proposed by Keogh in 1982.     

Learning disabilities in minority adolescents

Summary Seventy “predelinquent” disadvantaged seventh-grade students and 30 controls were compared on fifteen variables. It was found that the experimental group was significantly behind the controls in reading, grade-point-average, IQ test scores (verbal and nonverbal), as well as on measures of visual-motor and auditory perceptual functioning. It appears that the experimental youngsters display a syndrome usually considered to evidence specific learning disabilities. However, in this type of population it is difficult to separate the effects of environmentally determined deficits from inherent deficits. Therefore, it was not possible to estimate the incidence of true specific learning disabilities. On the other hand, it was suggested that regardless of the etiology of the deficits, these children could profit from the same types of educational opportunities as have been found well-suited to aid children with learning disabilities.