The interface between mathematics and design and technology in secondary schools

ABSTRACT

This article suggests that there are important connections between design and technology and mathematics curricula and that these are not fully made in the United Kingdom National Curriculum. Using three examples, the authors show how there are real opportunities in design and technology teaching for incorporating mathematical learning, but that all too often these are lost because they are not made explicit. Again, the authors argue that too much mathematics teaching is dominated by abstract investigation rather than practical problem‐solving. They conclude by suggesting that teaching should transcend subject boundaries and be concerned with real‐life situations.     

The Effect of Mother–Child Reading Time on Children's Reading Skills: Evidence From Natural Within-Family Variation

Children's exposure to book reading is thought to be an influential input into positive cognitive development. Yet there is little empirical research identifying whether it is reading time per se, or other factors associated with families who read, such as parental education or children's reading skill, that improves children's achievement. Using data on 4,239 children ages 0–13 of the female respondents of the 1979 National Longitudinal Survey of Youth, this study applies two different methodologies to identify the causal impact of mother–child reading time on children's achievement scores by controlling for several confounding child and family characteristics. The results show that a 1 SD increase in mother–child reading time increases children's reading achievement by 0.80 SDs.     

DEVELOPING THE RESOURCES OF THE RURAL ELDERLY THROUGH EDUCATION

Older adults want continuing education programs that are more than just recreational activities to fill leisure time. DARE (Developing Adult Resources through Education) is an educational program for the rural aged that provides courses ranging from those of a serious, academic orientation to the hobby/recreational to the practical. A model of why adult learners engage in lifelong learning is applied to the older adult. DARE shows how college and community resources can be used for the educational advantage of the older person.     

How doctors search: A study of query behaviour and the impact on search results

Professional, workplace searching is different from general searching, because it is typically limited to specific facets and targeted to a single answer. We have developed the semantic component (SC) model, which is a search feature that allows searchers to structure and specify the search to context-specific aspects of the main topic of the documents. We have tested the model in an interactive searching study with family doctors with the purpose to explore doctors’ querying behaviour, how they applied the means for specifying a search, and how these features contributed to the search outcome. In general, the doctors were capable of exploiting system features and search tactics during the searching. Most searchers produced well-structured queries that contained appropriate search facets. When searches failed it was not due to query structure or query length. Failures were mostly caused by the well-known vocabulary problem. The problem was exacerbated by using certain filters as Boolean filters. The best working queries were structured into 2–3 main facets out of 3–5 possible search facets, and expressed with terms reflecting the focal view of the search task. The findings at the same time support and extend previous results about query structure and exhaustivity showing the importance of selecting central search facets and express them from the perspective of search task. The SC model was applied in the highest performing queries except one. The findings suggest that the model might be a helpful feature to structure queries into central, appropriate facets, and in returning highly relevant documents.     

Fetal Genotype for the Xenobiotic Metabolizing Enzyme NQO1 Influences Intrauterine Growth Among Infants Whose Mothers Smoked During Pregnancy

Maternal smoking during pregnancy retards fetal growth and depresses infant birth weight. The magnitude of these effects may be moderated by fetal genotype. The current study investigated maternal smoking, fetal genotype, and fetal growth in a large population sample of dizygotic twins. Maternal smoking retarded fetal growth in a dose-dependent fashion. In a subsample of 497 twin pairs whose mothers smoked during pregnancy, a functional polymorphism in the NAD(P)H:quinone oxidoreductase gene ( NQO1 Pro187Ser; rs1800566) was significantly associated with fetal growth within families. The effect was strongest among moderate smokers. This is the first demonstration that fetal genotype for an enzyme involved in tobacco smoke metabolism influences intrauterine growth independent of maternal genotype. Future studies should conduct formal tests of Fetal Genotype × Maternal Smoking interactions.     

对推行和完善高校本科生导师制度的思考

实施本科生导师制度是中国高校教学改革和发展的必然要求。我国本科生导师制度在实践中取得了一定的成效,但同时也存在一些问题。本科生导师制度在教育实践中需要不断完善。