小学语文作文教学浅析

小学语文教学重在培养学生的识字写字能力和听、说、读、写能力。作文教学是语文教学中必不可少的重要组成部分,是培养学生写作能力的主要途径。在小学语文作文教学中,教师的任务是培养学生的写作兴趣,让学生养成积累素材、语文知识和优秀古典诗词的习惯,以提高学生的写作能力。本文结合笔者教学实践,简要论述了小学作文教学的策略。     

浅谈小学语文教学中情感教育的实施

在小学语文教学中,情感是灵魂,是学生智力的催化剂和学习的原动力。在小学语文教学中,培养学生的情感,引导学生体会文章感情,让学生与作者同喜同悲,教会学生敢爱敢恨,是语文教学的重要任务。     

小学语文阅读教学中如何培养学生创造性思维

小学语文教学是学生学习其他科目的基础,教会学生识字、书写以及阅读,其中,阅读教学是语文教学的重点部分,阅读教学效率对语文学习效率有着重要的影响。通过阅读能够激发学生的创造性思维,提高学生的语文素养,丰富学生的精神世界。随着素质教育的落实,小学语文教学理念及方法均进行了改革,由传统教学改为创新型教学,强调要在小学语文课堂教学过程中调动学生的好奇心,开发学生的思维,培养学生的创新意识,为推动社会发展培育出更多优秀的人才。     

浅谈高中语文情境教学

语文是学生学习各科知识的基础,是一门基础性的综合课程。在教学中,学生是学习的主体,学生的兴趣、积极性以及参与教学活动的活跃程度,对于教学任务的完成都起着关键性的作用。而情境教学能有效激发学生的学习兴趣。为此,教师要不断更新教学观念,紧跟时代步伐,完善教学模式,及时学习新的教学方法,合理利用情境教学来为语文课程注入活力,鼓励学生积极主动地去探究新知,培养学生的自主学习能力。     

浅谈小学计算机教学中学生创新实践能力的培养

对小学计算机的学习与教学,要抓住学生心理,激活学生的兴趣,在教学实践中不断地总结教学经验,改进教学方法,利用先进的教学手段实现教学目的。兴趣是学生最好的老师,学生只有对学科感兴趣,才能学好。     

浅谈在小学语文低段教学中如何拓宽识字途径

识字教学一直是小学语文教学的重点和难点。那么,怎样才能提高学生的识字质量呢?拓宽识字途径,激发学生的识字兴趣,是识字教学中的重中之重。本文从激发兴趣、教给学生常用的识字方法、拓宽识字途径等三方面阐述了在小学语文低年段识字教学中如何拓宽识字途径。教师只有遵循教学规律,尊重学生个体,采用丰富多彩的教学方法来拓宽学生的识字途径,注重学生识字能力的培养,才能让识字教学焕发出活力,从而使学生受益终身。     

张家口市属高校思想政治理论课教学体系的构建

学生是学习的主体,"学好"才是教学的最终目的。本文通过分析学生特点,提出以学生为本的教学理念,以"学好"为导向构建教学体系,从而切实提高教学针对性和实效性。     

浅谈人性化的教学

对人性化教学问题进行详细的分析与研究。教育真正的目的是尽力让每个学生学到知识,很明显目标主体在于学生,所以关注了学生、实行人性化教学才是教学中的重中之重。     

浅谈小学语文识字教学

识字是阅读和作文的基础。在小学语文识字教学中,教师要根据学生的思维特征,运用各种教学手段,对学生加以正确的引导,从而使学生乐于识字,学会识字。"识字"是小学生的一个难关,也是小学语文教学的一个重要任务。为了完成这一目标,我们在教学中要注意培养学生的识字兴趣,教给他们科学的识字方法,从而逐步提高学生的识字能力。     

美术课堂优化与个性化培养方法

当今美术教育提倡学生个性的发展,而个性化发展是在美术教育中的一个突出特点。创设愉悦的教学氛围,优化课堂设计、培养学习兴趣,是在美术教学中促进学生个性化发展的基本路径。巧妙运用评价语言去鼓励学生、根据学生实际情况因材施教、完善教学评价体系,彰显学生个性才能更好地提高美术教学的教学效率和教学质量,使学生的个性得到更好发展。     

Attempts to train goldfish to respond to magnetic field stimuli

Two different conditioning procedures, one appetitive and the other aversive, were used in separate attempts to demonstrate response to magnetic fields in the goldfish, Carassius auratus. Our results lead us to question those of an orientation experiment by Becker, although we recognize the possibility that goldfish may be sensitive primarily to magnetic field direction rather than intensity and that their directional sensitivity may be evidenced most readily by orientation in the field.     

从生态旅游到低碳旅游——从理念到实践

阐述了生态旅游、低碳旅游的基本概念,分析了生态旅游存在的不足,提出低碳旅游的量化及建立各项标准及其指标评价体系并将之融入低碳旅游全过程以实现低碳旅游的标准化,重点在于实现低碳理念、低碳参与者及低碳实践3个方面的有机结合,以促进旅游业的可持续发展的可操作性建议.     

如何做好突发环境事件应急监测的快速响应

应急监测是突发性环境污染事故处置中的首要环节,是对污染事故及时、正确地进行应急处理、减轻事故危害和制定恢复措施的根本依据。文章从制定应急监测预案、加强应急监测能力建设、摸清污染源状况、加强应急培训和应急演练等方面对做好突发环境事件应急监测的快速响应作了简要的阐述,供大家探讨。     

Croppers to livestock keepers: livelihood transitions to 2050 in Africa due to climate change

The impacts of climate change are expected to be generally detrimental for agriculture in many parts of Africa. Overall, warming and drying may reduce crop yields by 10–20% to 2050, but there are places where losses are likely to be much more severe. Increasing frequencies of heat stress, drought and flooding events will result in yet further deleterious effects on crop and livestock productivity. There will be places in the coming decades where the livelihood strategies of rural people may need to change, to preserve food security and provide income-generating options. These are likely to include areas of Africa that are already marginal for crop production; as these become increasingly marginal, then livestock may provide an alternative to cropping. We carried out some analysis to identify areas in sub-Saharan Africa where such transitions might occur. For the currently cropped areas (which already include the highland areas where cropping intensity may increase in the future), we estimated probabilities of failed seasons for current climate conditions, and compared these with estimates obtained for future climate conditions in 2050, using downscaled climate model output for a higher and a lower greenhouse-gas emission scenario. Transition zones can be identified where the increased probabilities of failed seasons may induce shifts from cropping to increased dependence on livestock. These zones are characterised in terms of existing agricultural system, current livestock densities, and levels of poverty. The analysis provides further evidence that climate change impacts in the marginal cropping lands may be severe, where poverty rates are already high. Results also suggest that those likely to be more affected are already more poor, on average. We discuss the implications of these results in a research-for-development targeting context that is likely to see the poor disproportionately and negatively affected by climate change.     

Soil microbial response to herbicides applied to glyphosate-resistant canola

Adoption of glyphosate-resistant canola (Brassica napus L.) has increased glyphosate applications to this crop, and concerns have been raised about unintended consequences of these multiple applications. A field trial was conducted to evaluate the effects of pre-seed and in-crop glyphosate and alternative herbicides on soil microbial community functional structure, diversity and biomass. Pre-seed treatments were 2,4-D, glyphosate and 2,4-D + glyphosate, and in-crop treatments were glyphosate applied once, glyphosate applied twice, ethalfluralin, ethalfluralin + sethoxydim + ethametsulfuron + clopyralid, and sethoxydim + ethametsulfuron. Rhizosphere and bulk soil was collected at flowering stage of canola and analyzed for bacterial community-level substrate utilization patterns and microbial biomass C (MBC). Where differences were significant, pre-seed application of both 2,4-D and glyphosate altered the functional structure and reduced the functional diversity of soil bacteria, but increased MBC. These effects were not necessarily concurrent. The reduction in functional diversity was due to reduction in evenness, which means that the soil where both pre-seed herbicides had been applied was dominated by only few functional groups. In 1 year, two in-crop applications of glyphosate also reduced the functional diversity of soil bacteria when applied after pre-seed 2,4-D, as did in-crop sethoxydim + ethametsulfuron following pre-seed glyphosate. Even though significant differences between herbicides were fewer than non-significant differences, i.e., there were no changes in soil microbial community structure, diversity or biomass in response to glyphosate or alternative herbicides applied to glyphosate-resistant canola in most cases, the observed changes in soil microbial communities could affect soil food webs and biological processes.     

重归大自然——密西西比河之行

密西西比河是美国第一大河。它一路曲曲弯弯向着墨西哥湾蜿蜒流去．沿途形成广袤的洪泛平原,滋润着美国大陆41％的土地。水量也比美国其他河流都要多。密西西比河及其洪泛平原哺育着400多种野生动植物。北美地区40％的水禽都沿着密西西比河的路径迁徙。密西西比河对于美国。如同长江对于中国,无论从经济还是生物多样性保护等方面,其作用都是举足轻重。     

亲近自然的一条捷径——向你推荐《生物多样性知识达人手册》

"它随处可见,从最大的海洋到最小的水坑,从最茂密的森林到最干旱的荒漠,从最富饶的沼泽到最高的山峰……它是一个活的银行账户,为人类全部事业和财富提供资本.它是什么?它就是……生物多样性." 翻开《生物多样性知识达人手册》的第一页,在"开头的话"中,你就能读到上面这一段饶有趣味的文字,让你不自觉地联想到我们所处的环境和我们赖以生存的地球.没错,这是一本新鲜出炉的、以生物多样性为主题的读物,用生动有趣的方式告诉你,什么是生物多样性?生物多样性为什么重要?你怎样才能保护好这个星球的生物多样性?     

浅谈如何做好孩子的入学准备

从幼儿园升入小学是孩子迈入知识殿堂的关键一步,也是孩子人生的一大转折。如何协助家长和教师,帮助孩子顺利实现这次转折是非常重要的。基于此目的,结合多年从事幼小教育工作的实际,并根据教育部颁布的《幼儿园教育指导纲要》精神,紧扣学前儿童的心理和学习特点,阐述如何让孩子在各方面得到系统的锻炼和提高,为顺利升入理想的小学、并尽快适应小学阶段的学习和生活做好准备。     

如何利用普通水罐车向消防车供水

近几年钻井井喷、井下作业井喷、单拉井储罐火灾等事故扑救过程中,由于离基地较远,周围没有消火栓、消防水池等水源,井场道路狭窄,消防车接力供水掉头非常困难,给扑救火灾带来很大的不便。如2005年6月19日某油田P3-347井井喷火灾事故,因井场供水不足,错过了最佳灭火时机,致使井喷着火9个小时后才被扑灭。因此,如何利用普通水罐车向消防车供水是值得探讨的课题。