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当前人教版小学语文教材中童话寓言故事的课后习题设计目标较为清晰明确,难度相对适中,语言表述充满童真,但存在部分习题问题空泛、对听说读写综合能力的整合不够、对学生的写作引导不够等问题。习题设计改进路径为:将口语交际、情景表演落到实处,注重学生语文综合能力的培养,通过扩写和缩写引导学生写作。 相似文献
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刘千秋 《内江师范学院学报》2014,(1):123-126
人教版、苏教版高中语文教材是目前全国使用范围比较广泛的两个版本。两个版本必修教材中的新诗选文在选文的数量、编排体系和内容方面都存在一些差异。两个版本的高中语文必修教材的经验表明,高中语文的新诗选编,必须摈弃选文的政治化、正统化、个人化、随意化,在选文时代性和典范性协调一致的前提下,应选择适合学生学习的、符合学生心理特点和认知程度的新诗。 相似文献
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Zuo-bing CHEN Zhong-yan LIANG Yun ZHANG Shao-yang ZHANG Shu-sen ZHENG 《Journal of Zhejiang University. Science. B》2010,11(1)
Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure widely used to diagnose and treat conditions of biliary or pancreatic ductal system. The post-ERCP severe acute pancreatitis (SAP) accompanied with duodenum perforation is rare but serious, remaining a challenge in clinic. In this study we report two such cases. Two Chinese women were treated for clinical suspicion of bile duct obstruction and underwent ERCP after admission. Both developed duodenum perforation and SAP after ERCP, and were ... 相似文献
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基于自建语料库,以文化关键词为视角对人教版初中英语教科书《英语(新目标)》中的文化内容进行语料库驱动的分析。研究表明,教科书中的文化关键词集中在社会文化、校园文化和家庭文化这三类,并各自体现出一定的倾向。对三个核心文化关键词的进一步考察发现,教科书呈现的社会文化内容丰富,比较注重培养道德品质和规范意识,但对技术类学校的呈现以及学生的心理和安全关注不足。 相似文献
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YANG Ji-ming HUANG Zeng-shou 《课程.教材.教法》2008,(11)
人教版普通高中生物教材设计,突出系统科学的编写思想,三个必修模块分别以系统论、信息论、控制论为主线贯穿其中,其教学内容的设计思路和呈现方式,以问题驱动学习,引导学生自主、探究、合作学习。创造性使用人教版高中生物教材各栏目,提高了学生生物科学素养,在创造性教学中创造性使用教材,培养了学生的创新精神和实践能力。 相似文献
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剪枝过程是决策树分类学习中的重要环节,能够简化决策树并提高决策树的泛化能力,避免对训练数据集的过适应。在PEP算法的基础上,本文提出了一种改进的决策树剪枝算法IPEP,实验结果表明,该算法剪枝效果较PEP算法更好。 相似文献
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新课改后初中历史教学的重要阵地就是教材中的历史内容了,本文将结合人教版教材《历史与社会》中八年级上下册和九年级全册第一单元浅谈初中历史的教学策略与方法,分析课本结构、教学安排、教学内容的重难点、结合探究的讨论,主要从师生互动、教学与教材等方面展开,对初中历史教学给予一定的建议,从知识内容和情操培养上更好地促进学生学习。 相似文献
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王格琦 《大连教育学院学报》2004,20(3):21-23
人教版七年级语文教科书对"综合性学习"专题的选择和设计存在一些值得改进的地方。其问题主要表现在参考资料过多、活动设计过简、内容取向过窄等方面。 相似文献
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Zhang Q Chen QH Fu ML Wang JL Zhang HB He GQ 《Journal of Zhejiang University. Science. B》2008,9(7):527-535
The bglS gene encoding endo-1,3-1,4-β-glucanase from Bacillus subtilis was cloned and sequenced in this study. The bglS expression cassette, including PGK1 promoter, bglS gene fused to the signal sequence of the yeast mating pheromone α-factor (MFals), and ADH1 terminator with G418-resistance as the selected marker, was constructed. Then one of the PEP4 allele of Saccharomyces cerevisiae WZ65 strain was replaced by bglS expression cassette using chromosomal integration of polymerase chain reaction (PCR)-mediated homologous recombination, and the bglS gene was expressed simultaneously. The recombinant strain S. cerevisiae (SC-βG) was preliminarily screened by the clearing hydrolysis zone formed after the barley β-glucan was hydrolyzed in the plate and no proteinase A (PrA) activity was measured in fermenting liquor. The results of PCR analysis ofgenome DNA showed that one of the PEP4 allele had been replaced and bglS gene had been inserted into the locus of PEP4 gene in recombinant strains. Different endo-1,3-1,4-β-glucanase assay methods showed that the recombinant strain SC-βG had high endo-1,3-1,4-β-glucanase expression level with the maximum of 69.3 U/(h-ml) after 60 h of incubation. Meanwhile, the Congo Red method was suitable for the determination of endo-1,3-1,4-β-glucanase activity during the actual brewing process. The current research implies that the constructed yeast strain could be utilized to improve the industrial brewing property of beer. 相似文献