A simple microscopy assay to teach the processes of phagocytosis and exocytosis

Phagocytosis and exocytosis are two cellular processes involving membrane dynamics. While it is easy to understand the purpose of these processes, it can be extremely difficult for students to comprehend the actual mechanisms. As membrane dynamics play a significant role in many cellular processes ranging from cell signaling to cell division to organelle renewal and maintenance, we felt that we needed to do a better job of teaching these types of processes. Thus, we developed a classroom-based protocol to simultaneously study phagocytosis and exocytosis in Tetrahymena pyriformis. In this paper, we present our results demonstrating that our undergraduate classroom experiment delivers results comparable with those acquired in a professional research laboratory. In addition, students performing the experiment do learn the mechanisms of phagocytosis and exocytosis. Finally, we demonstrate a mathematical exercise to help the students apply their data to the cell. Ultimately, this assay sets the stage for future inquiry-based experiments, in which the students develop their own experimental questions and delve deeper into the mechanisms of phagocytosis and exocytosis.     

Integrating Social Media Into the Classroom Curriculum

Interested in incorporating social media into your teaching but wary of the effort it might take? According to the research reviewed by Paige Abe and Nickolas A. Jordan, the challenge may be well worth it in terms of increased student engagement.     

Managing Uncertainty During Collaborative Problem Solving in Elementary School Teams: The Role of Peer Influence in Robotics Engineering Activity

This study investigated how interaction with peers influenced the ways students managed uncertainty during collaborative problem solving in a 5th-grade class. The analysis focused on peer responses to individuals’ attempts to manage uncertainty they experienced while engaged in collaborative efforts to design, build, and program robots and achieve assignment objectives. Patterns of peer response were established through discourse analysis of work sessions for 5 teams engaged in 2 collaborative projects. Three socially supportive peer responses and 2 unsupportive peer responses were identified. Peer interaction was influential because students relied on supportive social response to enact most of their uncertainty management strategies. This study provides a useful theoretical contribution to understanding the roles of peer interaction in collaborative problem solving. Conceptualizing collaborative problem solving as a process of negotiating uncertainties can help instructional designers shape tasks and relational contexts to facilitate learning.     

Nothing about us without us! Youth-led solutions to improve high school completion rates

This Youth Participatory Action Research (YPAR) study represents a collaboration with six students from alternative education to inquire about the experiences of vulnerable youth – students in alternative education and youth who have dropped out of school. Utilizing the Enhanced Critical Incident Technique, youth researchers asked their peers what helped and hindered their retention and success in mainstream and alternative education. Youth researchers engaged in authentic participation and took part in the iterative phases of YPAR – critical reflection and social action. Their involvement empowered them to advocate for their peers by disseminating the results and recommendations to key stakeholders within the community. Youth researchers conducted semi-structured interviews with 18 participants. Overall, the findings show that relationships with staff and peers, flexibility, psychosocial and academic supports, and personal circumstances are vital in helping vulnerable students succeed in school. Engagement in YPAR provided insight into working with vulnerable youth in a manner that promotes agency and social change within educational institutions.     

Teaching thinking: the case for principles

Abstract

This paper reviews the situation with regard to the teaching of thinking skills as part of the taught curriculum. The case is made for direct teaching of cognitive skills both to meet the particular learning difficulties of children with special educational needs and also to enhance the learning and thinking of all children. The dangers of ‘recipe’ approaches to teaching this aspect of the curriculum are discussed and a ‘principles’ approach is advocated. Some principles are then described which may be used to underpin the designing of problem‐solving activities, through which thinking skills can be taught across the curriculum.     

Early years curriculum: funds of knowledge as a conceptual framework for children’s interests

Children’s interests are frequently cited as a source of early‐years curricula. Yet, research has rarely considered the nature of these interests beyond the play‐based environment of early‐childhood education. This paper reports findings from a qualitative, interpretivist study in two early childhood settings in Aotearoa/New Zealand. Using participant observation, interviews, and documentation, the study examined children’s interests and teachers’ engagement with these in curriculum interactions. Evidence suggested children’s interests were stimulated by their ‘intent participation’ in family and community experiences and encapsulated in the notion of ‘funds of knowledge’. The concept of funds of knowledge provides a coherent analytic framework for teachers to recognize children’s interests and extend teachers’ curriculum planning focus beyond that of a child‐centred play‐based learning environment.     

Managing external knowledge flows: The moderating role of absorptive capacity

In this paper, we argue that those firms with higher levels of absorptive capacity can manage external knowledge flows more efficiently, and stimulate innovative outcomes. We test this contention with a sample of 2265 Spanish firms, drawn from the Community Innovation Surveys (CIS) for 2000 and 2002, produced by the Spanish National Statistics Institute (INE). We find that absorptive capacity is indeed an important source of competitive advantage, especially in sectors characterized by turbulent knowledge and strong intellectual property rights protection. The implications for management practice and policy are also discussed.     

El recuerdo de cuentos e historias en niños escolares

Resumen

El principal objetivo de este estudio fue examinar la influencia de la edad en el recuerdo y organización de tres tipos de historias: normal, mezclada e invertida. Las diferencias significativas se producían en el recuerdo total, en las inferencias añadidas al recuerdo y en la organización temporal del recuerdo del cuento.     

Creating a Comprehensive School Reform Model: The Talent Development High School With Career Academies

This article discusses the need for comprehensive reforms in school organization, curriculum and instruction, and professional development in order to address the typical, serious problems of large, urban, nonselective high schools. The article describes the design, implementation, and effectiveness of the Talent Development High School with Career Academies, a comprehensive school reform model developed to meet these schools' needs. A plan is outlined for additional research, development, and evaluation activities to complete this model for the remaining core high school academic subjects and grades, and to provide technical assistance materials and support for further replicating the model in high schools across the nation.