Many aspects of the problem-based learning cycle aim at stimulating students to elaborate on their knowledge. This elaborative process is considered to be one of the most effective study aids for learning and applying information. One of the opportunities to stimulate this elaboration process is by offering students more, and more diverse,…

Debate continues about what existing evaluations of the impact of Problem Based Learning tell us and about how future evaluations should be designed. This paper argues that establishing descriptive causation should be an important goal of such evaluations. Minimizing threats to internal validity is of key importance to establishing descriptive…

This article aims at discussing the six papers included in this special issue on innovations in Problem-based learning (PBL). The papers address different aspects related to the implementation and the development of PBL. This discussion article highlights the relevance of the theme explored by each of the papers, the contributions emerging from…

Knowledge structure is an important aspect for defining students' competency in biology learning, but how knowledge structure is influenced by the teaching process in naturalistic biology classroom settings has scarcely been empirically investigated. In this study, 49 biology lessons in the teaching unit "blood and circulatory…

In this study, we investigated the impact of teaming school-based instructional coaches with science or mathematics middle school teachers to build a community of practice around inquiry instruction. This professional development model began with a 2-week summer institute and continued with four follow-up sessions during the academic school year…

This study examined the effect of the translation of traditional scientific vocabulary into plain English on student achievement in college science instruction. The study took place in the context of an introductory microbiology course. Data were collected from course sections instructed with traditional microbiology vocabulary as well as sections…

This article presents an exploratory case study of a teacher's knowledge, understanding, and practice of critical pedagogy in a sheltered instruction high school biology classroom. This case study relied on the use of fieldnotes, videotape recordings, interviews, and transcripts to showcase the practices and activities taking place in the…

Though many research-based problem types have been shown effective in promoting students' conceptual understanding and scientific abilities, the extent of their use in actual classrooms remains unclear. We interviewed and surveyed 16 physics and engineering faculty members at a large US Midwest research university to investigate how…

Recent research and reform documents in mathematics and science education have highlighted the importance of preservice teacher education that focuses on understanding students' reasoning and modifying instruction accordingly. Utilizing the constructs of core practices and the professional noticing as lenses with which to examine the…

Research indicates that differentiated practices enhance the likelihood of meeting the needs of students who find literacy learning challenging (Tobin & McInnes, 2008; Tomlinson, 2003). The aim of the professional development project described here was to leverage these findings and to build the foundation for future research exploring if…

The benefits of connecting school students with scientists are well documented. This paper reports how New Zealand teachers brought scientists into the classrooms through the use of videos of New Zealand scientists talking about themselves and their research. Two researchers observed lessons in 9 different classrooms in which 23 educational videos…

This study examined student actions, interpretations, and language in respect to questions raised regarding tabular, graphical, and algebraic representations in the context of functions. The purpose was to investigate students' interpretations and specific ways of working within table, graph, and the algebraic on notions fundamental to a…

Reform efforts in science education have aimed at fostering scientific literacy by helping learners meaningfully engage in scientific practices to make sense of the world. In this paper, we report on our second year of unit implementation that has investigated 34 fifth grade students' (10-year-olds) learning about evaporation and condensation…

This study extends current research on the refutation text effect by investigating it in learners with different levels of working memory capacity. The purpose is to outline the link between online processes (revealed by eye fixation indices) and off-line outcomes in these learners. In science education, unlike a standard text, a refutation text…

In 2001, the Chinese Ministry of Education issued Guidelines for Preschool Education (GPE) (trial version) to call on early childhood practitioners to use a child-centered and play-based approach to teaching and learning. The guidelines also include mathematics within the science domain and described its standards in a way that significantly…