The concept map as a research and evaluation tool: Further evidence of validity

This study sought further evidence of the concurrent validity of concept mapping as a research and evaluation tool in science education. Specifically, the study examined the extent to which differences exist in the concept maps of advanced college biology majors (N = 25) and beginning nonmajors (N = 25) in the domain of mammals. Furthermore, it explored whether these differences are reflected in the way subjects assign class membership as revealed in a card sorting task. The results indicate that concept maps of biology majors are structurally more complex than those of nonmajors and that differences in the structural complexity and organizational patterns depicted in concept maps are reflected in the underlying dimensions used to assign class membership. Together, these findings suggest that the concept map provides a theoretically powerful and psychometrically sound tool for assessing conceptual change in experimental and classroom settings.     

Undergraduate Students’ Conceptions of Mathematics: An International Study

In this paper, we report on an international study of undergraduate mathematics students’ conceptions of mathematics. Almost 1,200 students in five countries completed a short survey including three open-ended questions asking about their views of mathematics and its role in their future studies and planned professions. Responses were analysed starting from a previously-developed phenomenographic framework (Reid et al., 2003) which required only minor modification. Students’ conceptions of mathematics ranged from the narrowest view as a focus on calculations with numbers, through a notion of mathematics as a focus on models or abstract structures, to the broadest view of mathematics as an approach to life and a way of thinking. Broader conceptions of mathematics were more likely to be found in later-year students (p<0.001) and there were significant differences between universities (p<0.001). The information obtained from the study not only confirms previous research, but also provides a basis for future development of a monitoring questionnaire.     

Effect of short‐ and long‐term play therapy services on teacher–child relationship stress

The purpose of the present study was to explore the effect of both short‐ and long term Child‐Centered Play Therapy on teacher–student relationship stress. Teachers identified 58 students exhibiting emotional and behavioral difficulties who were randomly assigned to one of two treatment groups. Students in the short‐term intensive play therapy group participated in 16 sessions of play therapy over 8 weeks, and students in the long‐term play therapy group participated in 16 sessions over 16 weeks. Results indicated that both intervention groups demonstrated significant improvement in teacher–student relationship stress from pre‐ to posttest. Post hoc analyses indicated that the short‐term intensive intervention demonstrated statistical significance and larger effect sizes in overall total stress, teacher characteristics, and student characteristics. © 2008 Wiley Periodicals, Inc.     

Scientific explanations and piagetian operational levels

Explaining natural phenomena is an important goal in science teaching. A logical analysis reveals that causal explanations exhibit formal operational structures in that they consist of implication statements chained together through transitive reasoning. It was hypothesized in the present study that individuals who do not reason formally will have difficulty in learning explanations presented in instruction. To test this hypothesis, the effect of levels of operational thought on the explanations which ninth-grade (n = 26) and college (n = 40) physical science students reconstructed after instruction was investigated. Subjects in the study were classified through Piagetian tests as concrete or formal operational. Both concrete and formal subjects were successful in recalling explanations requiring the chaining of two implication statements. Formal operational subjects performed significantly better than concrete operational subjects in three of the four tests of the reconstruction of complex explanations requiring the chaining of six implication statements. In teaching complex causal explanations to students at the concrete operational level, it is suggested that teachers be prepared to furnish some external structuring which the students can rely on in logically relating the various propositions of the explanation to one another.     

Experience,Challenges, and Opportunities of Being Fully Embedded in a User Group

Embedded librarian models can assume different forms and levels, depending on patron needs and a library’s choice of delivery services. An academic health sciences library decided to enhance its service delivery model by integrating a librarian into the College of Pharmacy, approximately 250?miles away from the main library. This article describes the embedded librarian’s first-year experience, challenges, and opportunities working as a library faculty in the college. The comparison of one-year recorded statistics on preembedded and postembedded activities demonstrated the effectiveness and impact of such an embedded librarian model.     

Learning via mnemonic pictures: Analysis of the presidential process

In three experiments, junior high school students learned the numerical order of 14 U.S. presidents according to either a complex mnemonic strategy or their own techniques. Reliable performancepattern differences between the two groups were detected, both in the presence and absence of overall level-of-recall differences. Chief among the pattern differences were the classic serial-position profiles produced by control subjects, but not by those using mnemonic strategies, and the slower response times (suggesting a more complex retrieval process) of subjects using mnemonic strategies.     

The effectiveness of blended online learning courses at the community college level

Whether through the use of online-only or hybrid/blended formats, colleges and universities across the country are increasingly utilizing online platforms as a medium for the delivery of instruction. At the same time, we know little about how student learning outcomes are related to students’ engagement with online instructional formats. In particular, few studies have evaluated online learning in community colleges, and fewer yet have employed an experimental or quasi-experimental design to do so. In this research, we use propensity score matching to compare learning gains between community college students enrolled in blended courses, (courses that combine online instructional delivery with traditional classroom-based instruction) with gains experienced by students receiving only classroom-based instruction. Among students enrolled in blended courses, we also consider which aspects of student use of online instructional materials are most strongly associated with student learning. While some evidence has suggested significantly poorer outcomes for community college students enrolled in online-only courses, our results suggest that students enrolled in blended courses perform similarly, if not better, relative to students in a traditional instructional setting. Implications for practice and research are discussed.     

Citizens' educational values and their satisfaction with a state university

This study describes citizens' values regarding (1) the importance of various university goals and activities, (2) the importance of various academic fields or disciplines, and (3) the importance of various reasons for attending the University of Minnesota. The study examines the relationships between these categories of educational values and citizen satisfaction with the University of Minnesota. A stratified random sample of 722 Minnesota citizens received a questionnaire which had a series of items related to the purposes of the study; 56% returned completed questionnaires. Common factor analyses were used to identify categories of educational values. Citizens' values regarding important goals and activities of the university and their values regarding important reasons for attending the university were somewhat useful in explaining their satisfaction.     

Solving structured geometric tasks on the computer: The role of feedback in generating strategies

This paper describes a year-long study of the way a group of six 12-year-old children went about solving a special class of geometric problems, using a computer and a limited set of Logo programming tools. We examined children's solution strategies from the perspective of whether the strategies led to insights about the underlying mathematical relations. It was found that the feedback aspect of the computer graphics screen encouraged solution strategies that were qualitative and driven by visual data, rather than being based on explicit or implicit relations. These visually based strategies did not lead to the kind of mathematization of problem-situations that we as mathematics educators would like to see and, in fact, seemed to be a barrier to the development of higher levels of geometric thinking.     

Understanding cellular respiration: An analysis of conceptual change in college biology

This study explored and documented the frequencies of conceptual difficulties confronted by college students seeking to understand the basic processes of cellular respiration. Using concept maps, clinical interviews and an open-ended instrument, viewpoints were elicited from 100 (novice) introductory biology students before and after relevant instruction in cellular respiration and from 100 (experienced) students enrolled in advanced biology courses. Chi-square analyses revealed significant differences among groups in the frequencies of scientifically acceptable and alternative conceptions. The findings suggest that novices harbor a wide range of conceptual difficulties that constrain their understanding of cellular respiration. Furthermore, many of these difficulties persist after instruction and new ones arise. Often these conceptual problems remain intact among experienced students despite well-planned, repeated instruction at advanced levels.