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191.
Henk J. Pol Egbert G. Harskamp Cor J. M. Suhre Martin J. Goedhart 《Journal of Science Education and Technology》2008,17(4):410-425
Many students experience difficulties in solving applied physics problems. Most programs that want students to improve problem-solving
skills are concerned with the development of content knowledge. Physhint is an example of a student-controlled computer program
that supports students in developing their strategic knowledge in combination with support at the level of content knowledge.
The program allows students to ask for hints related to the episodes involved in solving a problem. The main question to be
answered in this article is whether the program succeeds in improving strategic knowledge by allowing for more effective practice
time for the student (practice effect) and/or by focusing on the systematic use of the available help (systematic hint-use
effect). Analysis of qualitative data from an experimental study conducted previously show that both the expected effectiveness
of practice and the systematic use of episode-related hints account for the enhanced problem-solving skills of students. 相似文献
192.
Lydia Schaap Peter Verkoeijen Henk Schmidt 《Assessment & Evaluation in Higher Education》2014,39(5):625-640
This study investigated the effects of two different true–false questions on memory awareness and long-term retention of knowledge. Participants took four subsequent knowledge tests on curriculum learning material that they studied at different retention intervals prior to the start of this study (i.e. prior to the first test). At the first and fourth (pre- and post-) tests, participants indicated which form of memory awareness (i.e. remember, know, familiar and/or guess) accompanied their answer. On the two intermediate tests, testing format was manipulated: true/false or true/false justification, that is a true/false statement with the additional instruction to explain why the statement is true or false. The results resembled earlier findings in that different forms of memory awareness could be distinguished. The study did not indicate (additional) knowledge schematisation as a result of testing or testing format. However, independent of test format, the proportion of correct answers on the post-test was higher than on the pre-test. This could indicate that the beneficial effects of testing can occur even when the learning episode was at a long retention interval prior to the first test. 相似文献
193.
Mandy J. Hill Camden J. Hallmark Marlene McNeese Nike Blue Michael W. Ross 《Sex education》2014,14(2):128-143
The goal of this paper was to determine the effectiveness of the HIP HOP for HIV Awareness intervention, an innovative model utilising an exchange of an HIV test for a hip hop concert ticket, in a metropolitan city among African American youth and young adults. A subset of intervention participants participated in standardised testing, sex education and pre/post test administration. Data were analysed to identify changes in knowledge and attitudes with respect to HIV and sexually transmitted infections pre/post the educational session. An analysis of knowledge revealed variance in the pre- and post-assessment findings among participants receiving the intervention. Level of education and gender significantly influenced the variance in knowledge discerned from the pre- and post-assessment among participants. Two three-level significant interactions emerged from the analysis of variance: knowledge, education and gender; and knowledge, education and race/ethnicity. Programme findings suggest that an increase in knowledge and improved self-perceptions related to attitudes are the result of a brief, HIV-focused community-based intervention among young adults. 相似文献
194.
Mandy Biggers 《Research in Science Education》2018,48(1):1-28
Questioning is a central practice in science classrooms. However, not every question translates into a “good” science investigation. Questions that drive science investigations can be provided by many sources including the teacher, the curriculum, or the student. The variations in the source of investigation questions were explored in this study. A dataset of 120 elementary science classroom videos and associated lesson plans from 40 elementary teachers (K-5) across 21 elementary school campuses were scored on an instrument measuring the amount of teacher-direction or student-direction of the lessons’ investigation questions. Results indicated that the investigation questions were overwhelmingly teacher directed in nature, with no opportunities for students to develop their own questions for investigation. This study has implications for researchers and practitioners alike, calling attention to the teacher-directed nature of investigation questions in existing science curriculum materials, and the need for teacher training in instructional strategies to adapt their existing curriculum materials across the continuum of teacher-directed and student-directed investigation questions. Teachers need strategies for adapting the teacher-directed questions provided in their existing curriculum materials in order to allow students the opportunity to engage in this essential scientific practice. 相似文献