高中物理核心素养与“问题-互动”式教学研究

随着新课程改革不断深化,素质教育已经成为教育模式创新的重点,在高中物理的教育教学中,核心素养的培养是保障学生课堂主体地位,提高学生对物理这一抽象、复杂学科理解的重要内容。本文通过对当前高中物理教学现状进行解析,通过“问题-互动”式教学模式探究教育教学创新方法,在提升高中物理教学效率的同时实现物理核心素养的全面培养。

高中数学“问题-互动”教学中培养学生核心素养策略

高中数学教学的主要目标是夯实学生基础概念知识,并对其进行灵活运用。除此之外还要培养学生的数学核心素养,使学生的逻辑思维能力和实践能力得到良好发展。因此,本文主要从在课堂教学中强化师生互动、有效设计与选择问题、突出问题要求、创设教学情境、注重合理引导等方面入手,深入研究高中数学“问题-互动”教学中培养学生核心素养的有效策略。

高中数学核心素养在“问题—互动”教学模式中的培养

数学核心素养是教师培养学生学习的重点,也是数学科目的核心。在数学学习的过程中培养数学核心素养,能够提升学生的数学学习能力和数学品质,提高综合素质。在传统教学过程中,教师主要以应试教育为主,忽略了学生综合能力的培养,导致不少学生平时考试成绩很好,但是在社会中发展潜力较弱。究其原因,就是没有养成良好的数学核心素养,使其在生活中遇到问题的解决能力和数学思维格局不够完善。因此,在引导学生数学学习的过程中,教师要培养学生良好的数学学习习惯,使学生在“问题—互动”教学模式中培养自己的数学核心素养。

Effect of Bottom Undulation on the Waves Generated Due to Rolling of a Plate

In the present paper, the effect of a small bottom tmdulation of the sea bed in the form of periodic bed form on the surface waves generated due to a rolling oscillation of a vertical barrier either partially immersed or completely submerged in water of non uniform finite depth is investigated. A simplified perturbation technique involving a non dimensional parameter characterizing the smallness of the bottom deformation is applied to reduce the given boundary value problem to two independent boundary value problems upto first order. The first boundary value problem corresponds to the problem of water wave generation due to rolling oscillation of a vertical barrier either partially immersed or completely submerged in water of uniform finite depth. This is a well known problem whose solution is available in the literature. From the second boundary value problem, the first order correction to the wave amplitude at infinity is evaluated in terms of the shape function characterizing the bottom undulation, by employing Green＇s integral theorem. For a patch of sinusoidal ripples at the sea bottom, the first order correction to the wave amplitude at infinity for both the configuration of the barrier is then evaluated numerically and illustrated graphically for various values of the wave number. It is observed that resonant interaction of the wave generated, with the sinusoidal bottom undulation occurs when the ratio of twice the wavelength of the sinusoidal ripple to the wave length of waves generated, approaches unity. Also it is found that the resonance increases as the length of the barrier increases.

A Scoping Review： Transitioning Into Retirement With Chronic Health Disorders

A scoping review was conducted to report on the nature and extent of the literature addressing the transition through peri and post retirement for people living with chronic disorder（s）. The secondary purpose was to determine the extent that gender issues and the transition age （50-65） are specifically addressed. Of 3,256 titles identified, 111 articles meet the inclusion criteria. Information was often indirect but addressed varying health domains that significantly influence transitional stages toward retirement and illustrating the burden of chronic comorbid health problems, unequal gender positions with differences in labour force participation, retirement pensions, and changing social dynamics. Few studies directly addressed the complex interaction of chronic health outcomes, psychological well-being, social and financial health as a significant paradigm in determining a successful transition into retirement. Needed are prospective longitudinal studies that measure predictors and outcomes of retirement transitioning along with qualitative studies that define the decision-making process. Given the substantial differential impact in respect to retirement risk factors and opportunities, there must be consideration in design and analysis for future high quality research.

Method towards optimal design of dielectric elastomer actuated soft machines

Soft machines are combinations of hard and soft active materials, thus the coupling and interaction between soft and hard components dictate the performance of soft machines. Structural optimization has been intensively used for design of conventional hard machines, while, to our best knowledge, few attempts have been made towards optimal design of soft machines. Here, we describe the sizing optimization problem of a dielectric elastomer(DE) actuated mechanical amplifier, and achieve the optimal design through combination of a commercial finite element method(FEM) software and an optimization automation software.We then design, fabricate and demonstrate a locomotive soft machine driven by DE actuator with amplified displacement output.The methodology and results present here open the door towards optimal designs of active materials based soft machines.