Inquiring into the Nature of STEM Problems     

Pleasants  Jacob 《Science & Education》2020,29(4):831-855

Around the world, there is a growing interest in integrated STEM (science, technology, engineering, mathematics) education. Many of the calls for integrated STEM emphasize the need for students to engage with complex STEM problems that cut across multiple fields. Yet there is a need to clarify the nature of those problems and differentiate STEM problems from those of different kinds. This conceptual work examines the nature of STEM problems in order to inform pre-college educational efforts in STEM. A typology is introduced that situates STEM problems within a broader space of problems within STEM and non-STEM fields, and the characteristics of STEM problems are described. The typology and characteristics are then applied to different approaches to STEM instruction. A key conclusion is that many integrated STEM education efforts tend to focus on STEM problems that are narrowly framed and that do not include attention to social, cultural, political, or ethical dimensions. However, alternative instructional approaches exist that re-introduce those missing dimensions. If STEM education is to prepare students to grapple with complex problems in the real world, then more attention ought to be given to approaches that are inclusive of the non-STEM dimensions that exist in those problems.

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Zero‐Slack,Noncritical Paths          下载免费PDF全文

Jacob V. Simons Jr. 《Decision Sciences Journal of Innovative Education》2017,15(3):254-267

The critical path method/program evaluation and review technique method of project scheduling is based on the importance of managing a project's critical path(s). Although a critical path is the longest path through a network, its location in large projects is facilitated by the computation of activity slack. However, logical fallacies in oft‐repeated statements of the relationship between slack and the critical path make it easy to overlook the phenomenon of zero‐slack, noncritical paths. This article points out the fallacies and then describes and illustrates the phenomenon. We conclude with teaching recommendations to avoid suboptimal decisions in reducing project duration.  相似文献   

Getting serious about institutional performance in student retention: Research-based lessons on effective policies and practices     

Don Hossler  Mary Ziskin  Jacob P. K. Gross 《About Campus》2009,13(6):2-11

The Indiana Project on Academic Success and the College Board Pilot Study on Student Retention evaluated the effectiveness of a variety of approaches to student retention. The authors share empirically grounded insights gleaned from this research.  相似文献   

Maltreatment following reunification: Predictors of subsequent Child Protective Services contact after children return home     

Christian M. Connell  Jeffrey J. Vanderploeg  Karol H. Katz  Colleen Caron  Leon Saunders  Jacob Kraemer Tebes 《Child abuse & neglect》2009,33(4):218-228

ObjectivesThis study examined risk of maltreatment among children exiting foster care using a statewide sample of children reunified between 2001 and 2004 in Rhode Island. The objectives were: (1) to compare rates of maltreatment following parental reunification for youth in care as a result of maltreatment with those in care for other reasons; and (2) to assess the effects of child, family, and case characteristics on rates of re-maltreatment among children placed in foster care due to maltreatment.MethodA longitudinal dataset of all reunified cases was matched with state records of substantiated Child Protective Service (CPS) investigations. Two Cox proportional hazards models were tested. The first model compared rates of subsequent maltreatment for two groups: children in foster care as a result of maltreatment, and those in care for other reasons. The second model investigated the effects of child, family, and case characteristics on re-maltreatment rates for those in care as a result of maltreatment.ResultsChildren in foster care due to maltreatment were significantly more likely to be maltreated following reunification. Among children in foster care due to maltreatment, factors that raised risk for re-maltreatment included a previous foster care placement, exiting care from a non-relative foster home, and removal due to neglect. Older adolescents had lower rates of re-maltreatment than infants. Child neglect was the primary type of recurrent maltreatment that occurred following reunification.ConclusionsSupports are needed for families about to be reunified, particularly when the removal was prompted by incidents of abuse or neglect. Incidents of neglect are particularly likely and appropriate services should specifically target factors contributing to neglect. Cases involving youth with a history of repeated foster care placement or in which non-relative placements are utilized may need additional supports.Practice implicationsThis study suggests that services should be developed to minimize the risk for recurrent maltreatment following reunification. Services would be most useful for high-risk cases prior to reunification and during the first year following reunification. Understanding the risks associated with maltreatment will help guide development of appropriate interventions.  相似文献   

Facteurs associés à la rétention des signalements impliquant un abus sexuel     

Marc Tourigny  Marie Jacob  Isabelle Daigneault  Martine Hébert  John Wright 《Child abuse & neglect》2009,33(12):888-896

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Re-Examining the Similarities Between Teacher and Student Conceptions About Physical Science     

Jacob N. Burgoon  Mandy L. Heddle  Emilio Duran 《Journal of Science Teacher Education》2010,21(7):859-872

There is a large body of research that has explored students’ misconceptions about science phenomena. Less research, however, has been devoted to identifying teachers’ misconceptions, but the results of the few existing studies demonstrate that teachers and students possess similar misconceptions. This study explored the physical science conceptions of 103 elementary science teachers to determine whether, after three decades of misconception research, teachers still possess conceptions similar to those held by students. We found that our teachers expressed misconceptions regarding gravity, magnetism, gases, and temperature that were similar to common student misconceptions. Suggestions for improving science professional development programs are discussed.  相似文献   

Investigating Strategies for Pre-Class Content Learning in a Flipped Classroom     

Jamie L. Jensen  Emily A. Holt  Jacob B. Sowards  T. Heath Ogden  Richard E. West 《Journal of Science Education and Technology》2018,27(6):523-535

In a flipped classroom model, learning of basic content is shifted before class while in-class time is used for concept application. Empirical and controlled research studies are lacking on the best strategies to provide the necessary pre-class content instruction. In this study, we tested three methods of pre-class content learning—interactive online tutorials, video lectures, and textbook-style readings—while holding the content and the in-class application activities constant. Identical introductory, non-majors biology classes were manipulated at both a public, open-enrollment institution and a private, highly selective institution. We found that video lectures offer a small advantage to overall student learning over interactive tutorials or textbook-style readings. Although our two populations differed in their ability to effectively learn from pre-class activities, through a student-centered flipped classroom approach, students at both institutions demonstrated equal learning gains by the final assessment. Potential reasons for some observed differences are suggested.  相似文献   

Promoting Financial Literacy and Latino Males’ Success at Community Colleges     

Cristobal Salinas Jr.  Jacob R. Hidrowoh 《Community College Journal of Research & Practice》2018,42(5):330-339

Latino males across the country enroll in community colleges with the purpose of obtaining an educational degree, which could lead to accomplishing professional and personal aspirations. Even if Latino male students enroll in post-secondary education, they continue to be disenfranchised, vanished, and often rejected through the higher education pipeline. Research regarding access to education shows that money matters to the success of Latino students. Through a metasynthesis, this practice briefly identifies that there is little to no empirical research conducted that explores how Latino male community college students elicit, engage, and explore financial literacy programs. This paper makes recommendations for post-secondary institutions, practitioners, and policymakers to promote Latino males’ success at community colleges.  相似文献   

Beyond Reading,Writing, and Arithmetic: A Brief Case for Considering Values‐Based Institutional Learning Outcomes          下载免费PDF全文

Debora Hinderliter Ortloff  Jacob E. Amidon 《Assessment Update》2018,30(3):3-14

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Challenges to Cognitive Bases for an Especial Motor Skill at the Regulation Baseball Pitching Distance     

Jeffery P. Simons  Jacob M. Wilson  Gabriel J. Wilson  Stephen Theall 《Research quarterly for exercise and sport》2013,84(3):469-479

We tested expert baseball pitchers for evidence of especial skills at the regulation pitching distance. Seven college pitchers threw indoors to a target placed at 60.5 feet (18.44 m) and four closer and four further distances away. Accuracy at the regulation distance was significantly better than predicted by regression on the nonregulation distances (p < .02), indicating an especial skill effect emerged despite the absence of normal contextual cues. Self-efficacy data failed to support confidence as a mediating factor in especial skill effect. We concluded that cognitive theories fail to fully account for the patterns of observed data, and therefore theoretical explanations of the especial skills must address noncognitive aspects of motor learning and control.  相似文献