Exploring Israeli high school graduates’ explanations for the spread of the coronavirus

Educational Studies in Mathematics - The aim of this study is to explore Israeli high school graduates’ mathematical explanations for the spread of the coronavirus, given that the mathematics...     

The personal relationship between the kindergarten teacher and the parents as a mediator between cultures

The purpose of the study is to describe the teacher's personal connection with parents as an intermediary factor between cultures and to examine the implications for the future of the migrant group in the receiving society. The study is a qualitative study based on the phenomenological approach and involved five teachers working with African children. The findings show three categories: (1) social and cultural, (2) language, (3) behaviour and education. The contribution focuses on the importance of developing intercultural competence among the teachers and the importance of having a joint-personal dialogue in order to cope with migration challenges.     

Constructing and Consolidating of Algebraic Knowledge within Dyadic Processes: A Case Study

Studies of knowledge constructing often focus on the analysis of a single episode, without considering enough the history of the learners, or the future learners' trajectories with regard to the concepts learned. This paper presents an example of knowledge constructing within the context of peer learning. We show how the design of the task and the tools available to the students afford the constructing of conceptual knowledge (the phenomenon of exponential growth and variation, as it is expressed in its numerical and graphical representations). We trace the constructing of knowledge through a series of dyadic sessions for a few months in a classroom environment. We show that knowledge is constructed cumulatively, each activity allowing for the consolidating of previous constructs. This pattern indicates the nature of the processes involved: knowledge constructing and consolidating are dialectical processes, developing over time, when new constructs stem from old ones already consolidated, which gain consolidation through the new construction, creating a new abstract entity. We also discuss the potential of the tool the students used (a spreadsheet program) to such processes of learning mathematics.     

Opportunities for learning given to prospective mathematics teachers: between ritual and explorative instruction

The mathematics education field, including prospective teacher education program, has seen a continuous effort to change teaching practices to be more cognitively demanding, conceptually oriented and student centred. Our goal in this study was to examine how certain underlying assumptions about mathematical learning, as reflected in a skilled instructor’s discourse, align with opportunities to learn. The data included a set of fully transcribed 11 lessons from an introductory algebra course. The method of analysis was built upon the communicational (commognitive) framework and included discerning between the instructor’s mathematizing and identifying talk. This framework was extended to quantify the instructor’s identifying talk over the whole set of lessons. Our findings showed that at the surface level, the instruction in the class seemed to align with “explorative” goals. On a deeper level, however, it was more aligned with “ritual” goals that are concerned with producing narratives about people, not about mathematics.     

Psychometric and Social Issues in Admissions to Israeli Universities

How are students selected for university in Israel? What does the Psychometric Entrance Test measure? How effective is the process of translating tests? What studies have been conducted on the tests?     

Academic self-efficacy,sense of coherence,hope and tiredness among college students with learning disabilities

Abstract

Some resilient students with LD succeed ‘against the odds’ and reach college. The goals of the study are to explore their resources and barriers during their studies. The relationships between academic self-efficacy (ASE) and personal resources (sense of coherence (SOC) and hope) among college students with learning disabilities (LD) will be examined. The sample consisted of 438 college students divided into two subgroups: 149 students with LD and 289 Non-LD students. Results indicated that college students with LD reported lower levels of ASE, as well as lower levels of hope subscales and SOC. Persistent challenges of early learning distress experienced by those students during school periods continue to be prevalent during their college years. The ASE was predicted by the personal resources, and the risk factor (tiredness lost its significance). The importance of personal resources (SOC and hope subscales) was further emphasised by the mediation model (PROCESS). They mediated the relationships between LD and ASE. These outcomes call for empowering interventional programmes in order to promote hopeful thinking and personal coherence.     

Learning novel words by ear or by eye? An advantage for lexical inferencing in listening versus reading narratives in fourth grade

This study examined the ability to infer the meaning of novel made-up words that appeared in 16 short narrative texts, presented in two modalities—reading and listening. Hebrew-speaking 4th grade students (N = 54) were asked to infer the meanings of the made-up words in both modality conditions. In this cross-group design, students were randomly assigned to one of two order conditions: reading first or listening first. Regardless of condition, participants were better able to infer the meaning of the made-up words in the listening condition than in the reading condition. Individual differences in word reading, vocabulary, and reading comprehension mediated novel word learning but working memory did not. Results are discussed in relation to the challenges faced by 4th grade Hebrew readers in the transition from reading a fully pointed (vowelized) shallow orthography to an unpointed, deep orthography. The ability of 4th grade readers to infer novel words appears to be enhanced when listening to animated narration, and is mediated by extant vocabulary knowledge and higher-order comprehension processes, but also by basic decoding skills.     

Microfluidic chip for fast bioassays��evaluation of binding parameters

A seven channel polystyrene (PS) microchip has been constructed using a micromilling machine and a high-temperature assembling. Protein A (PA) has been immobilized by a passive sorption on the microchannel walls. Two bioaffinity assays with human immunoglobulin G (hIgG) as a ligand have been carried out. (i) PA as the receptor and fluorescently labeled hIgG (FITC-hIgG) as the ligand, (ii) PA as the receptor with hIgG as the quantified ligand and fluorescently labeled goat anti-human IgG (FITC-gIgG) as the secondary ligand. One incubation step of the assays took only 5 min instead of hours typical for enzyme-linked immunosorbent assay applications. Calibration curves of the dependence of a fluorescence signal on the hIgG concentration in a sample have been obtained in one step due to a parallel arrangement of microchannels. A mathematical model of the PA-FITC-hIgG complex formation in the chip has been developed. The values of the kinetic constant of the PA-FITC-hIgG binding (k_on=5.5 m³ mol⁻¹ s⁻¹) and the equilibrium dissociation constant of the formed complex (K_d≤3×10⁻⁶ mol m⁻³) have been obtained by fitting to experimental data. The proposed microchip enables fast evaluation of kinetic and equilibrium constants of ligand-receptor bioaffinity pairs and the ligand quantification. As the use of microfluidic chips for immunoassays is often limited by price, we used procedures and chemicals that allow for an inexpensive construction and operation of the microdevice, e.g., temperature assembling as a fabrication technique, detection via an ordinary digital camera, nonspecific polystyrene as a substrate, passive sorption of biomolecules as an immobilization technique, etc.     

Structures of Constant Rate Word Problems: A functional approach analysis

Many recent projects have lately explored function-based approaches to algebra. For the last five years we developed and tested such an approach to algebra, the 'Visual Mathematics'¹ curriculum, in grades seven to nine. While teaching this curriculum we learned from our students' work that while functions form an important basis for solving various sorts of algebra word problems, they introduce some tension in dealing with other sorts of word problems. The data accumulated during our experiments led us to conjecture that viewing algebra rate problems through a function lens offers new ways to look at similarities and differences among word problems. This article presents a theoretical framework for a systematic investigation of the structures of algebra word problems and their relationship to function-based solutions. We think that for those who take a function approach to algebra, this paper suggests new insights into the categorization of word problems. This revised version was published online in July 2006 with corrections to the Cover Date.     

Examining the psychometric properties of the Infant–Toddler Environment Rating Scale-Revised Edition in a high-stakes context

The psychometric properties of the Infant–Toddler Environment Rating Scale-Revised Edition (ITERS-R) were examined using 153 classrooms from child-care centers where resources were tied to center performance. An exploratory factor analysis revealed that the scale measures one global aspect of quality. To decrease redundancy, subsets of items were selected randomly and by experts who rated items according to ease of administration and importance to quality. The shorter subsets demonstrated good discriminant validity, adequate to good psychometric properties, and high associations to the full ITERS-R score. They also demonstrated similar associations to staff education and staff-to-child ratio, as the full instrument. The best assessment of quality was demonstrated by the shortened subset that included items that assess both structural and process features of quality. Multilevel-analyses indicated that classrooms from the same providers score more similarly on ITERS-R than classrooms from other providers. The implications for using the ITERS-R in high-stakes contexts are discussed.