Recent curriculum reform promotes core competencies such as desired "content knowledge" and "communication" for meaningful learning in biology. Understanding in biology is demonstrated when pupils can apply acquired knowledge to new tasks. This process requires the transfer of knowledge and the subordinate process of translation across external…

Universal design for learning (UDL) holds promise for teachers who are struggling with creating lessons that allow all students access to and engagement with the general science curriculum. In this article, the authors demonstrate how a secondary physical science lesson about solubility and concentration can be designed for diverse learners' needs…

The purpose of this study was to investigate how multimodal assessment tools enabled Grade 2 students to show knowledge and understanding of wolves. The research design was a case study across three years employing descriptive statistics to portray student knowledge and understanding associated with the use of each tool. The findings indicate that…

The results from a study to explore pre-service teachers' understanding of ionization energy, a topic that features in A-level (grade 11 and 12) chemistry courses. in Singapore , is described. A previous study using a two-tier multiple choice diagnostic test has shown that Singapore A-level students have considerable difficulty understanding the…

To build on classroom experiments and lectures, Daniel Sweeney has his 9th grade earth science students act out scientific concepts on a 15-by-15-foot mat on the floor of the room. Object-tracking cameras mounted on scaffolding around the space collect data based on the students' movements while immersing them in the experience through a video…

Before the 19th century the idea of more than three dimensions was exceptional. During the 19th century, however, geometry was revolutionized and new branches were developed. This revolution also created the idea of the possibility of a n-dimensional geometry or space; flatland, i.e. n = 2, was a consequence of this new thinking. In 1884 the…

This essay details a public display of four steam engine models assembled in a Leiden orphanage courtyard in 1777. By examining the multiple purposes to which these engines were and could be put, alongside the various interests, goals and interpretations of their inventors, instructors and audience, the notion of a clear division between public…

In her seminal article in "Psychological Review," A. S. Gilinsky (1951) successfully described the relationship between physical distance (D) and perceived distance (d) with the equation d = DA/(A + D), where A = constant. To understand its theoretical underpinning, the authors of the current article capitalized on space perception mechanisms…

Teachers often use analogies and are unaware of it--they are using them automatically. Whenever they begin an explanation with "It's just like...," "It's similar to...," or "Think of it this way...," they are using an analogy to explain a concept to their students. An "analogy" is a similarity between concepts. Analogies can help students build…

In this article, we describe a preliminary study that integrates research on engineering design activities for K-12 students with work on microworlds as learning tools. Here, we extend these bodies of research by exploring whether--and how--authentic recreations of engineering practices can help students develop conceptual understanding of…

Three experiments were conducted to examine the effects of map structure, concept quantification, and focus question on dynamic thinking during a Concept Map (CMap) construction task. The first experiment compared cyclic and hierarchical structures. The second experiment examined the impact of the quantification of the header concept in the map.…

The epistemology of "relativism" that is featured by the theory of radical constructivism is addressed. In particular, I examine several objections, all based on this epistemic position of relativism, that are often raised by critics of the theory: the charge of "reality denial" (which, it is often claimed, must lead ultimately to the…

Throughout its long history, the conceptual change literature assumed that student "misconceptions" in mechanics have been formed prior to instruction. As an attempt to shed light on conceptual change, this paper examines some of the trends in the literature and argues that misconceptions may be spontaneous rather than preformed, that schema…

In this work, we presented an analysis of the representation of the special relativity theory (SRT) in the most used texts in high school, Polimodal level and university level in the teaching in the Argentine Republic, from a historic, epistemological and didactic perspective. The results show that none of the analyzed texts would allow a…

In this article the authors present an analogy, "Apple Activity," designed to help science teachers and students reflect upon science instruction and learning at the three conceptual levels of scientific understanding--macroscopic level, sub-microscopic/particle level, and symbolic level. Analogies are useful instructional tools that improve…