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This article considers student analogical reasoning associated with learning practice in creating bio-inspired robots. The study was in the framework of an outreach course for middle school students. Fifty eighth and ninth graders performed inquiries into behavior and locomotion of snakes and designed robotic models using the BIOLOID robot construction kit. We analyzed the interdomain analogies between biological and robotic systems elaborated by the students and evaluated the contribution of the analogies to the integrated learning of biology and robotics. The analogies expressed by the students at different stages of the course were collected and categorized, and their use in knowledge construction was traced. The study indicated that students’ reasoning evolved with learning, towards an increased share of deeper analogies at the end of the course. We found that analogical reasoning helped students to construct knowledge and guided their inquiry and design activities. In the proposed framework, the students learn to inquire into biological systems, generate analogies, and use them for developing and improving robotic systems.

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Pigeons were trained on an operant procedure to discriminate between morning and afternoon when location did not vary (Experiment 1). The pigeons were placed on a fixed interval (FI) schedule in the morning and on a different FI schedule in the afternoon. Probe trials that occurred at the beginning of the training sessions were examined. The pigeons responded differently, depending on the time of day, reflecting the learning of a stable 24-h memory representation of the association between the FI schedules and the time of day. The pigeons from Experiment 1 were then clock shifted and tested twice, to determine whether they were relying on an endogenous circadian oscillator, an hourglass mechanism influenced by the photoperiod, or environmental noise to make the time-of-day discrimination (Experiment 2). The results of the second experiment indicated a circadian mechanism was most important for the observed time-of-day learning.  相似文献   
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Increasing the amount of contact with older adults is often proposed as a way to inform young people about aging. This study compares adolescents’ knowledge of aging with the amount and quality of contact they have with an older adult and compares adolescents’ knowledge of aging in 1978 with their knowledge in 1985. The results indicate that adolescents are very misinformed or uninformed about aging and older adults. Profiles of the responses on individual items from Palmore's “Facts on Aging” reveal qualitative differences associated with gender, degree of contact, and changes over time in the nature of the adolescents’ knowledge of aging. How adolescents perceive older adults and the implications this has for educational efforts are discussed.  相似文献   
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