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This article compares students' critiques within a class discussion about an invented statistic to STEM professionals' critiques from interviews to better understand how the situated meanings of a statistic are similar and different across student and professional worlds. We discuss similarities and differences in how participants constructed meaning for the statistic, and argue that disciplinary practices in schooling will always have an approximate, and somewhat indeterminate, relation to the figured worlds of professional practice. 相似文献
94.
从抑制控制模型出发,采用负启动范式探究过度使用比例推理的认知机制。研究包括3个实验,以小学生、中学生和大学生为被试,分别考察了抑制控制在解决缺值应用题、图片推理任务中的作用,以及数字比(整数比、非整数比)是否对抑制控制过程有影响。结果发现:小学生、中学生和大学生在两类实验任务中均出现了负启动效应,但负启动量不存在年级差异;在图片推理任务中,不同数字比类型下的负启动量具有显著差异。研究结果支持了抑制控制模型的观点,即成功解决问题不仅需要掌握问题的内在逻辑,更需要对不恰当策略进行抑制;在解决问题的过程中,无论是儿童、青少年还是成人都需要抑制控制的参与,三者在抑制控制效率上没有差异;数字比类型对抑制过程有影响,但仅限于图片推理问题。 相似文献
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中医学是以“概念为单元”的功能医学,经络是功能网络。中医的“证”是外在的、变化着的、阶段性的。随着病的变化,证也在变化,质在变,量也在变。它有整体可控性,用模糊数学给中医的证候标量化,以便临床选方用药,“以数据治”。概念语言符号化,使中医古老的语形结构换上新衣,方便与当代科技沟通,进入网络传播,这或许是中医逐步走向现代化的一个切入点,一座桥梁。 相似文献
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William J. Calderhead Kevin J. Filter Richard W. Albin 《Journal of Behavioral Education》2006,15(1):51-65
The purpose of this study was to replicate and extend research on task interspersal. The authors investigated whether changes in on-task behavior of two middle school students were functionally related to changes in the relative percentages of easy and difficult items on math worksheets. They found that the participants remained on task longer while completing worksheets with 33 and 67% interspersed easy problems than while completing worksheets without the interspersed easy problems. Participants’ accuracy in answering the target problems was not affected, however, by the interspersal procedure. The authors concluded that interspersing easy items on independent math seatwork assignments can increase on-task behavior. 相似文献
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Jessi L. Smith 《Sex roles》2006,54(3-4):287-296
This project was designed to examine whether and how achievement goals contribute to the effect of gender stereotypes on women's
low expectancies for success on math tasks. Study 1 confirmed predictions from the Stereotyped Task Engagement Process (STEP)
model (Smith, 2004) by demonstrating that, compared to a counter-stereotype situation, women reminded of the gender-stereotype
endorsed performance-avoidance goals. Study 2 tested whether performance-goal adoption differed between men and women. Results
showed that, compared to men, women in a stereotype salient math situation were more likely to endorse performance-avoidance
achievement goals. This performance-avoidance goal adoption in turn, accounted for the negative relationship between participants'
gender and performance expectations for a standardized math test. 相似文献
98.
算术应用题的分类结果与数学成绩关系研究 总被引:3,自引:1,他引:2
以算术应用题为材料,探讨了不同年级、不同数学成绩学生对算术应用题的分类结果及其与数学成绩的关系。结果表明:不同年级学生对算术应用题分类结果差异显著;数学成绩优生与数学成绩差生对算术应用题分类结果存在差异。 相似文献
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How does improving children's ability to label set sizes without counting affect the development of understanding of the cardinality principle? It may accelerate development by facilitating subsequent alignment and comparison of the cardinal label for a given set and the last word counted when counting that set (Mix et al., 2012). Alternatively, it may delay development by decreasing the need for a comprehensive abstract principle to understand and label exact numerosities (Piantadosi et al., 2012). In this study, preschoolers (N = 106, Mage = 4;8) were randomly assigned to one of three conditions: (a) count‐and‐label, wherein children spent 6 weeks both counting and labeling sets arranged in canonical patterns like pips on a die; (b) label‐first,wherein children spent the first 3 weeks learning to label the set sizes without counting before spending 3 weeks identical to the count‐and‐label condition; (c) print referencing control. Both counting conditions improved understanding of cardinality through increases in children's ability to label set sizes without counting. In addition to this indirect effect, there was a direct effect of the count‐and‐label condition on progress toward understanding of cardinality. Results highlight the roles of set labeling and equifinality in the development of children's understanding of number concepts. 相似文献
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