Online Periodic Table: A Cautionary Note

The purpose of this study was (a) to evaluate ten online periodic table sources for their accuracy and (b) to compare the types of information and links provided to users. Limited studies have been reported on online periodic table (Diener and Moore 2011; Slocum and Moore in J Chem Educ 86(10):1167, 2009). Chemistry students’ understanding of periodic table is vital for their success in chemistry, and the online periodic table has the potential to advance learners’ understanding of chemical elements and fundamental chemistry concepts (Brito et al. in J Res Sci Teach 42(1):84–111, 2005). The ten sites were compared for accuracy of data with the Handbook of Chemistry and Physics (HCP, Haynes in CRC handbook of chemistry and physics: a ready-reference book of chemical and physical data. CRC Press, Boca Raton 2012). The 10 sites are the most visited periodic table Web sites available. Four different elements, carbon, gold, argon, and plutonium, were selected for comparison, and 11 different attributes for each element were identified for evaluating accuracy. A wide variation of accuracy was found among the 10 periodic table sources. Chemicool was the most accurate information provider with 66.67 % accuracy when compared to the HCP. The 22 types of information including meaning of name and use in industry and society provided by these sites were, also, compared. WebElements, “Chemicool”, “Periodic Table Live”, and “the Photographic Periodic Table of the Elements” were the most information providers, providing 86.36 % of information among the 10 Web sites. “WebElements” provides the most links among the 10 Web sites. It was concluded that if an individual teacher or student desires only raw physical data from element, the Internet might not be the best choice.     

Sexual Socialization Messages on Television Programs Most Popular Among Teens

This paper examines the portrayal of sexual messages in the top 20 most popular television programs among teenagers in the United States. It compares findings from the 2001–2002 and 2004–2005 seasons. Results show that these programs contained a large number of sexual messages, though their frequency decreased over time. Most messages about sex were in the form of conversations. About 1 in 2 shows included portrayals of sexual behaviors, mostly precursory behaviors. Sexual risk and responsibility concerns were rarely addressed. Most consequences for sexual intercourse portrayed in 2004–2005 were negative, a significant change from 2001–2002. The findings' implications for adolescents' sexual socialization are discussed.     

Preservice teachers' theory development in physical and simulated environments

We report a study of three prospective secondary science teachers' development of theories‐in‐action as they worked together in a group to explore collisions using both physical manipulatives and a computer simulation (Interactive Physics). Analysis of their investigations using an existing theoretical framework indicates that, as the group moved from physical experiments to the computer simulation, their attention shifted from planning their experiments to processing system feedback, which impeded the iterative refinement of their theories‐in‐action. The nature of the theories they developed also changed. Learners' attitudes toward science and prior experiences affected the exploration process in both environments. In particular, prior instruction in physics and an authoritarian view of science seemed to impede engagement in the development and testing of theories‐in‐action. Certain features of the computer system itself also impeded exploration. © 2006 Wiley Periodicals, Inc. J Res Sci Teach 43: 907–937, 2006     

“Nothing is impossible”: characteristics of Hispanic females participating in an informal STEM setting

Cultural Studies of Science Education - Factors that influence the underrepresentation of females in STEM careers begin early in childhood when gender biases and stereotypes emerge. Stereotypes...     

Just add hours? An assessment of pre-service teachers’ perception of the value of professional experience in attaining teacher competencies

This study compared pre-service teachers’ perceptions of their professional competencies at two campuses of a large regional teacher education university, where one campus provided students 22% more hours of professional placement in schools and related educational settings. Students who had experienced more hours in schools and such settings were more positive about their, ability to apply their knowledge of students and how they learn, classroom management, professional knowledge and practice, and community engagement; however, when students felt well supported during professional experience, such differences diminished. Additional hours were not associated with pre-service teachers’ perceptions of their ability to apply subject content and teaching; plan, assess and report; and effective student communication. Researchers argued that this pointed to the crucial role of good classroom mentors in teacher professional experience but also the value of students’ tertiary teacher education in preparing them for classroom teaching.     

Preparing teachers for family–school partnerships: a Dutch and Belgian perspective

Family–school partnerships (FSP) are considered important for student’s academic and social development. However, preparing preservice teachers for these partnerships is seen as a challenge. Most studies on preservice teachers’ preparation for FSP have been conducted in North American contexts, and little knowledge exists from a European perspective. Therefore, a study was conducted to examine all teacher training programmes in Belgium (Flanders) and the Netherlands. Programme managers were asked to complete the Epstein and Sanders’ survey on this topic. Findings show that in general, preparation for FSP is considered important and that this topic is integrated into different courses. Most respondents indicated that communication with parents received the most attention. However, a majority of programme managers feel that preservice teacher’s preparation in this area is not sufficient. In some programmes, FSP is not included in the curriculum. A third of the managers argued that preparing teachers for FSP belongs in in-service training. This is remarkable given the fact that collaboration with parents is legally required for preservice teachers’ graduation. Furthermore, this study shows that even a decade after Epstein and Sanders’ study, preparing teachers for FSP is still a challenge.     

Admitting Impediments: or things to do with bodies in the classroom

This paper indicates how new theorising of the body can be brought to bear on pedagogical work as an erotic field. I make a case that the body of the teacher needs to be remembered in writing about teaching and learning, because it produces desire in pedagogical events, for good as well as ill. I show the ways in which recent work on corporeality counters mainstream educational writing about students and teachers. I then comment on some brief accounts of the experience of learning, using some of these concepts as a framework for my analysis.     

Self paced learning: A student perspective

Training reform in Australian Vocational Education and Training (VET) has been well under way for over a decade. Reforms include marketisation, the widespread adoption of competency-based training, and most recently an adoption of various forms of flexible delivery. One of these alternative methods of delivery is self paced learning (SPL). SPL is presented by VET management as being advantageous to students and their employers, and in addition is generally less resource-intensive than face-to-face teaching. This paper examines SPL in a TAFE college from a student viewpoint. The research, using qualitative methods, examined the experiences of SPL, in Office Administration subjects, of students who have a Non English Speaking Background (NESB) or no regular access to computers. The paper describes how they adapted, reacted and responded to self paced learning. The difficulties experienced by these students when studying by self paced learning are discussed in detail The findings indicate that, whilst students are appreciative of the flexibility which self paced learning affords, there are some concerns about its efficacy in relation to educational outcomes.