Prospective primary teachers’ perceptions about the use of mathematics homework

The benefit of homework (HW) has been the subject of ongoing debate among various stakeholders. Within this debate, and in relation to teacher development, prospective teachers’ views of HW have received limited attention. In this study, we survey primary pre-service teachers’ (‘PSTs’) views of HW use (n = 45 teaching grades 2–5; n = 39 teaching grades 6 and 7) in a single discipline (mathematics) at one large Australian university.

The literature suggests students in upper primary and secondary grades will benefit from the use of mathematics HW. Results of the study, in contrast, suggest our PSTs teaching early primary grades planned to give proportionally (but not significantly) more mathematics HW than those teaching later grades. Reasons for this disparity are discussed. We argue there is a need in teacher development to equip PSTs with a better understanding of how classroom and home-based learning work together in the development of mathematical understanding.     

Proportionality Assumption in Latent Basis Curve Models: A Cautionary Note

Latent basis curve models (LBCMs) have been popular in modeling change when the change trajectories are unknown or nonlinear. The estimated change trajectories from LBCMs are often viewed as optimal and used as reference points against which other change trajectories are tested. However, there is a proportionality assumption underlying LBCMs that has received little attention from researchers. This study uses a Monte Carlo simulation to show that violation of this assumption can potentially result in substantially biased estimates of the means and variances of changes and covariate effects on these changes, leading to incorrect statistical inference. The implications of the simulation study are discussed and alternatives to LBCMs are suggested for use when the proportionality assumption is likely to be violated.     

技能主导类项群技战术能力的生理学探析

从生理学角度提出了技能战术能力的概念及其基本特征,分析了技战术形成和发展过程,以及影响技战术能力的关键因素,阐述了技能主导类项群技战术训练应注意遵循的生理学原理,指出加强技战术贮备、技战术实战应用程度力争达到自动化、培养运动员达到优秀或适应技战术要求的技能能级是技战术训练亟待重视的三个重要环节。     

生物教学中的情感教学

生物学是医学教育中一门重要的基础课，在教学中采用情感教学的方法可以激活学生的各种非智力因素，培养其创新思维能力，提高教学效率。     

有关普通话水平测试中一乙等级评分的几点感想

教育部颁布了新的<普通话水平测试管理规定>对普通话测试提出了新的要求,针对"一级乙等"测试中存在的问题和现象,笔者提出了粗浅的见解以期和同仁共同探讨.     

加工水平对具有广义抽象关系数学问题迁移的影响

解题者对靶题与源题之间的共性意识及加工水平对解题迁移的影响已经得到了验证,其中靶题与源题之间存在着广义抽象关系.结果表明:(1)当靶题是低难度或高难度问题时,解题者对靶题与源题之间共性关系的意识及加工水平对解题迁移的影响没有显著差异;(2)当靶题是中难度问题时,解题者对靶题与源题之间共性关系的意识及加工水平对解题迁移的影响有显著差异.     

对我国非公有制经济性质的认识

非公有制经济之所以是决定社会性质的基本经济制度的组成部分，是因为我国现实的社会主义是初级阶段的社会主义，非公有制经济是初级阶段社会主义性质的经济。初级阶段社会主义社会要坚持公有制的主体地 位，只有这样，才能保证初级阶段社会主义的社会主义方向。     

对县级地域开展现代远程教育的几点思考--兼析"人才培养模式改革和开放教育试点"在县级电大的实践与探索

在县级地域开展现代远程教育，适应了经济建设和社会发展对人才的需求，是构建学习型社会、提高县级地域人口素质的重要途径。县级电大在开展现代远程教育方面具有系统优势、网络优势和服务优势；县级地域开展现代远程教育要以县级电大为依托，在实施过程中要坚持质量第一。     

公司创业导向的诠释和研究维度

阐述了创业导向的三个分析层面,诠释了公司创业导向的内涵,并分别分析了创业导向的创新性、风险承担性、先动性、竞争积极性、自治性五个维度的特征,建议立足于公司层面,从五个维度对创业导向构念进行研究。     

基于规模和集群之上的企业技术创新行为研究

本文主要研究了企业规模以及集群对于企业技术创新水平的影响。首先分析了企业规模和集群各自对企业技术创新水平的作用，在此基础上，研究了两者对企业技术创新水平的共同影响，提出了一个“企业技术创新水平的无差异曲线模型”，并进行了简要的实证分析和检验。文章的结论主要为：存在一个阀值，以此为转折点，企业规模和技术创新水平的关系呈倒“U”型；集群度对于技术创新水平有正向影响，但是边际贡献递减；集群度越高，集群内企业规模阀值就越大；规模和集群度两者共同对企业技术创新水平的影响呈“无差异曲线”形态。