1, 2, 3, 4: Infusing Quantitative Literacy into Introductory Biology

Biology of the twenty-first century is an increasingly quantitative science. Undergraduate biology education therefore needs to provide opportunities for students to develop fluency in the tools and language of quantitative disciplines. Quantitative literacy (QL) is important for future scientists as well as for citizens, who need to interpret numeric information and data-based claims regarding nearly every aspect of daily life. To address the need for QL in biology education, we incorporated quantitative concepts throughout a semester-long introductory biology course at a large research university. Early in the course, we assessed the quantitative skills that students bring to the introductory biology classroom and found that students had difficulties in performing simple calculations, representing data graphically, and articulating data-driven arguments. In response to students'' learning needs, we infused the course with quantitative concepts aligned with the existing course content and learning objectives. The effectiveness of this approach is demonstrated by significant improvement in the quality of students'' graphical representations of biological data. Infusing QL in introductory biology presents challenges. Our study, however, supports the conclusion that it is feasible in the context of an existing course, consistent with the goals of college biology education, and promotes students'' development of important quantitative skills.     

当代中国马克思主义新时代观的三重逻辑

马克思主义时代观是马克思主义经典作家对所处时代的问题、主题、特征做出整体回答的基本看法和观点,是马克思主义的重要组成部分。党的十九大提出“中国特色社会主义进入新时代”的科学命题,以及党的十九届五中全会提出“两个大局”的重要论述,是当代中国马克思主义在对当下中国和世界做出全面判断的基础上对时代做出的科学判断,是马克思主义时代观在21世纪的最新表达。新时代产生新思想,新思想产生新飞跃,对新时代做出科学判断,是习近平新时代中国特色社会主义思想形成的基本依据。新时代观秉承马克思主义时代观的三重逻辑,即以把握社会基本矛盾规律为尺度的发展逻辑,以解决现实根本性问题为导向的实践逻辑,以哲学方法探讨时代本质的思维逻辑,充分彰显了马克思主义时代观具有一脉相承和与时俱进的理论品格,当代中国马克思主义新时代观是马克思主义时代观发展的最新理论形态。     

Teaching emotion understanding

The main goal of this research was to assess whether it is possible to help children develop their general understanding of emotions. Thirty-six nine-year-old children divided in two groups were examined using a pre-test/train/post-test design. The emotion understanding of the two groups was measured in the pre- and post-test phases using the Test of Emotion Comprehension (TEC). The experimental group received a teaching program about emotions during the training phase: School Matters In Lifeskills Education (SMILE). The control group received no special teaching about emotion during this phase. Results showed that the level of emotion understanding in the experimental group improved significantly between the pre- and post-test whereas no such change occurred in the control group. The theoretical and practical implications of the findings are discussed.     

Effects of acidified water on fish

The acidification of water leads to disturbances in the water and ion metabolism of fish, including the acid-base balance. Many fish probably possess physiological mechanisms to eliminate these disturbances completely or in part. However successful they may be in the short term, such adaptation mechanisms nevertheless require additional energy, thus causing growth and reproduction to be retarded. Taking into account the high sensitivity of fish eggs and larvae to acidification, these phenomena are probably a major contributory factor to the decline of fish stocks in acidified water.     

Tongan secondary students’ conceptions of schooling in New Zealand relative to their academic achievement

This study examines the relationship between Tongan students’ attitudes and beliefs towards their school experiences and their academic achievement on the high-stakes National Certificate of Educational Achievement (NCEA) assessments in English and mathematics. Data were obtained from using previously published self-reported inventories on a sample of Tongan senior students in New Zealand secondary schools. Confirmatory factor analysis of students’ conceptions found good fit measurement models for each domain (teaching, learning, and assessment). Structural equation modelling was used to identify the effect of the various beliefs upon students’ total score in each subject and upon internal and externally assessed performance. It was noted that different beliefs became statistically significant predictors of performance, depending on the subject and type of assessment. Nonetheless, all three constructs played some role in at least one subject. A small-to-moderate proportion of variance in NCEA performance could be attributed to student beliefs, suggesting that efforts to help students adopt adaptive beliefs will have beneficial consequences for those students.     

Day care and family dynamics

Twenty-one dual-earner families whose preschool-aged children entered day care before 6 months of age and 19 dual-earner families whose preschool-aged children entered day care during the second year of life filled out questionnaires on the nature of their children's caregiving environment; their perceptions of the effects of day care on parent-child interaction and children's development; their overall job satisfaction; social support networks; and personal well-being, marital stress, and companionship. Mothers and fathers reported high levels of satisfaction with the caregiving environment and the effects of day care. Parental perceptions of the effects of day care on parent-child interaction and children's development did not differ as a function of time of entry into day care. Parental perceptions of selected parent-child variables were associated with job satisfaction, social support, and the marital measures. Parental perceptions of parent-child interaction were related to their perceptions of the effects of day care on children's social and cognitive skills. Mothers and fathers differed in these perceptions. There was some support for a conceptual link between marital variables and children's functioning in day care.     

Neglected and abused children of mentally retarded parents

Sixty-four neglected and abused children with a mentally retarded parent seen from one to seven years earlier, were followed to determine placement outcomes. At the time of follow-up, 11 of 64 children remained with their low functioning parents. Six children had been relinquished voluntarily for adoption and courts had terminated parental rights for 34, resulting in a total of 40 who had been adopted. Nine children were in foster care at the time of the study; two had been awarded to their nonretarded parent following divorce; and two had died. All families had received public financial assistance and medical care and used an average of 10 other services per family. Because of their cognitive limitations, most of these retarded parents were unable to benefit sufficiently from community services to enable them to care for their children. These findings point up the need for a mechanism whereby the retarded adult's right to parent and the child's right to nurturance and protection may both be preserved. Until this dilemma can be resolved, decisions to terminate parental rights in such cases should be made more quickly.     

The role of the self-system in self-regulated learning

Until recently, general assumptions were made about the importance of the self-system in self-regulation (e.g., importance of self-concept, self-efficacy, self-esteem), but the more specific underlying structures and processes of the self-system that are involved in this self-management process were rarely addressed. This article presents theoretical and empirical support for a preliminary causal model of the role of the self-system in self-regulated learning. The model postulates that for self-regulated learning processes to be engaged, students must view themselves as activators of these processes (i.e., they must possess positive self-views in general as well as have specific perceptions of competency and control in particular learning situations). The model also postulates a recursive and reciprocal relationship between the processes involved, such that continual self-evaluations of competency and control can force changes in perceptions of self, the learning task, goal importance, etc., that, in turn, exert continuing influences on motivation, use of self-regulatory processes, and actual task performance. Educational implications of the model are discussed along with future research directions.