共查询到20条相似文献，搜索用时 78 毫秒
1.
2.
<正>中学物理教学大纲明确指出:"物理是一门实验科学。通过演示实验和学生实验,能够使学生理解物理概念和规律的建立与实验的关系,培养学生一定的实验能力。演示实验和学生实验对于培养学生学习物理的兴趣也是十分重要。"由此可见,实验是中学物理教学的一个重要组成部分,它既是物理教学的基础,又是物理教学的重要内容、方法和手段。物理实验能够使学生对物理知识获得具体的、明确的认识,是学生理解概念和物理规律的必要基础。物理实验中有较强的趣味性和探 相似文献
3.
分析了电子工艺实习的现状,指出其成本偏高、实习作品利用率不高且与后续课程结合不够紧密的问题,提出了一个电子工艺实习内容的优化设计方案——设计制作STC89C52单片机最小系统。该设计既可锻炼学生的专业基本技能,其实习成果还可以为后续"单片机原理及接口技术"课程提供一个辅助的实验平台。现已用于后续"单片机原理及接口技术"课程的课后实验,这对现有实验设备是一个很好的补充,可激发学生的学习兴趣,提高学习效率,且其成本低,可减轻学生购买专业实验设备的负担,有一定的使用和推广价值。 相似文献
4.
《实验室研究与探索》2015,(6):179-181
以一个经典的基础物理化学实验——"酸催化蔗糖水解反应"为例,浅谈如何通过丰富实验内容,帮助学生辩证区分在传统实验方法中,近似处理的合理性及限制条件;设计新实验方法,提高实验的效率;引入新的广谱性实验技术,使学生进一步理解化学热力学和动力学之间的联系,拓展学习思路、强化实验技术、培养创新意识,开发并引导学生了解和利用新的实验技术更好地进行科学研究。在传统实验教学中突出"新意",激发学生追求、尝试创新的兴趣与热情,鼓舞学生自己动手设计、改进实验,引入"新"内容,从而培养其创新意识与能力。 相似文献
5.
对常用的典型模具材料选取不同的工艺参数,对其表面进行激光淬火,取样后进行金相组织照片采集、淬火层层深及显微硬度检测分析。经试验结果对比分析,进而得出淬火层的性能与其微观组织以及激光淬火工艺参数三者之间的相互影响规律。为获得较理想微观组织分布和性能优异的淬火层提供了坚实的实验基础,使激光淬火技术在模具的表面强化处理上获得更好的应用。 相似文献
6.
7.
"植物细胞质壁分离与复原"实验,是高中必修教材第一册中关于植物细胞水分代谢的一个生理类验证性实验.我们在课堂学生分组实验和课外活动小组的活动中,将这个验证性实验加入了探究内容,及其进一步转化为探究性实验,不仅使学生理解植物细胞是一个渗透系统,进行渗透吸水或失水.同时将细胞膜结构特点和物质转运的特点有机地结合起来,巩固了细胞膜结构和功能的知识. 相似文献
8.
9.
10.
11.
12.
13.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
14.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
15.
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
16.
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
17.
18.
RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献
19.
20.
唐芳 《读与写:教育教学刊》2008,5(6)
During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context. 相似文献