运用“问题驱动三步法”的教学设计——以“自然界的水循环”为例

正德国教育家第斯多惠指出:"教学的艺术不在于传授的本领,而在于激励、唤醒与鼓励"。有效的课堂教学关注的不仅是教师的教,更重要的是学生的学。"问题驱动法"体现了"以生为本"的教学理念,用问题创设情境,用问题引导思考,用问题促进探究。多年来的教学实践告诉我们:"问题驱动三步法"是新授课引导学生自主学习的有效方法之一,具有操作性强,效果好的特点。其基本流程是:     

“河流地貌的发育”教学中三个亮点

正一、将有地理味的诗词引入课堂在本节新课导入时,笔者朗诵了一首充满哲理的抒情诗:"每个人心中都有一条河流,它把我们的一颗心分成两边:左岸柔软,右岸冷硬;左岸感性,右岸理性;左岸住着欲望、期盼、挣扎及爱恨嗔怒,右岸住着这个世界的规则,在我们心里打下的烙印;左岸是梦境,右岸是生活。"学生听完后,受到情感的熏陶,脑     

高中地理研究性学习的指导

正高中地理研究性学习是每个学生的必修课程。设置研究性学习活动的目的旨在引导学生关注社会、经济、科技和生活中的问题,通过自主探究、亲身实践的过程,综合地运用已有的知识和经验解决问题,学会学习,培养学生的人文精神和科学素养。但是,在实践过程中我们发现,地理研究性学习往往与真正的科学研究     

电子书包环境下的初中地理教学设计与思考——以“商业中心的分布”一课为例

正一、电子书包的概念与特点电子书包(e—school bag)是一套针对学习者设计的电子化教学辅助系统,它以笔记本电脑、平板电脑和智能手机等电子终端为载体,融入了网页、视频、动画等多媒体交互应用,使学生能够进行在线学习、提交作业、自我测评;教师能够在线布置、批改电子作业,进行在线的辅助指导;而家长也能通过网络及时了解学生的学习情况。总而言之,电子书包"从硬件角度上讲,是一种个人便携式学习终端。从教育教学的系统功能架构看,它是学习者的个人学习环境"。"电子书包"相比其它的教育技术手段,其特点表现为以下三点:     

Diagnosis of the Secondary Circulation of Tropical Storm Bilis (2006) and the Effects of Convective Systems on Its Track

We diagnose characteristics of the quasi-balanced flow and secondary circulation（SC） of tropical storm Bilis（2006） using the potential vorticity（PV）-ω inversion method.We further analyze how secondary steering flows associated with mesoscale convective systems affected the track of tropical storm Bilis after it made landfall.The quasi-balanced asymmetric and axisymmetric circulation structures of tropical storm Bilis are represented well by the PV-w inversion.The magnitude of the nonlinear quasi-balanced vertical velocity is approximately 75%of the magnitude simulated using the Weather Research and Forecasting（WRF） model.The SC of Bilis（2006） contained two strong regions of ascending motion,both of which were located in the southwest quadrant of the storm.The first（150-200 km southwest of the storm center） corresponded to the eyewall region,while the second（approximately 400 km southwest of the storm center） corresponded to latent heat release associated with strong precipitation in major spiral rainbands.The SC was very weak in the northeast quadrant（the upshear direction）.Dynamical processes related to the environmental vertical wind shear produced an SC that partially offset the destructive effects of the environmental vertical wind shear（by 20%-25%）.This SC consisted of upward motion in the southwest quadrant and subsidence in the northeast quadrant,with airflow oriented from southwest to northeast at high altitudes and from northeast to southwest at lower levels.The inverted secondary zonal and meridional steering flows associated with continuous asymmetric mesoscale convective systems were about-2.14 and-0.7 m s~（-1）,respectively.These steering flows contributed substantially to the zonal（66.15%） and meridional（33.98%） motion of the storm at 0000 UTC15 July 2006.The secondary steering flow had a significant influence on changing the track of Bilis from southward to northward.The direction of the large-scale meridional steering flow（3.02 m s~（-1）） was     

Guide for contributors

The journal of Global Geology （ English Edi- tion） is sponsored by the International Center of Geoscience Research and Education in Northeast Asia, Jilin University of China （ISSN 1673 - 9736, CN22 - 1371/P）. The former name of the journal was the Journal of International Geoscientific Research in Northeast Asia. It was launched in 1998 and served the scientists and teachers in geosciences in the world. The Editorial Board is composed of 42 scientists from various countries in the world, including China, German, Japan, Korea, Russia, the UK and USA.     

Guide for contributors

The journal of Global Geology （ English Edi- tion） is sponsored by the International Center of Geoscience Research and Education in Northeast Asia, Jilin University of China （ISSN 1673 - 9736, CN22 - 1371/P）. The former name of the journal was the Journal of International Geoscien- tific Research in Northeast Asia. It was launched in 1998 and served the scientists and teachers in geosciences in the world. The Editorial Board is composed of 42 scientists from various countries in the world, including China, German, Japan, Korea, Russia, the UK and USA.     

Guide for contributors

The journal of Global Geology （ English Edition） is sponsored by the International Center of Geoscience Research and Education in Northeast Asia, Jilin University of China （ISSN 1673 - 9736, CN22 - 1371/P）. The former name of the journal was the Journal of International Geoseientific Research in Northeast Asia. It was launched in 1998 and served the scientists and teachers in geosciences in the world. The Editorial Board is composed of 42 scientists from various countries in the world, including China, German, Japan, Korea, Russia, the UK and USA.     

统筹安排 疏堵结合 积极引导项目依法依规用地

2011年8月23日,胡锦涛总书记在十七届中央政治局第三十一次集体学习时,就关于完善我国土地管理制度问题,发表了重要讲话;2011年7月20日,温家宝总理在国务院第164次常务会议上,就进一步加强和改进土地管理工作作了重要部署。如何贯彻落实两位领导同志的讲话精神,结合实际工作,本人谈一些看法。     

让农民分享土地红利——“政府引导、群众自愿、市场运作、合作共赢”—广西柳州市征地保障新机制构建记略

2013年11月,党的十八届三中全会提出：建立城乡统一的建设用地市场。这是我国土地管理制度改革的一个重大举措,其目的是在符合规划和用途管制前提下,允许农村集体经营性建设用地出让、租赁、入股,实行与国有土地同等入市、同权同价。