Open Access. Powered by Scholars. Published by Universities.®

2021

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 91 - 120 of 121

Full-Text Articles in Pre-Elementary, Early Childhood, Kindergarten Teacher Education

Public Prekindergarten Teacher Perspectives On Professional Development In Literacy Pedagogy, Tunyia Lashawn Williams Jan 2021

Public Prekindergarten Teacher Perspectives On Professional Development In Literacy Pedagogy, Tunyia Lashawn Williams

Walden Dissertations and Doctoral Studies

Abstract Low achievement in literacy for children entering kindergarten exists despite district-sponsored professional development (PD) in literacy pedagogy for prekindergarten teachers. PD has been shown to be important in improving teachers’ instruction, so low achievement of children is unexplained. The purpose of this basic qualitative study was to explore public prekindergarten teacher perspectives of district-sponsored literacy PD in a school district in the Southeast United States. The conceptual framework was guided by Knowles’s adult learning theory, which holds that adults are self-directed learners with many experiences upon which to draw. Research questions addressed teacher PD perspectives regarding inclusion of adult …


Early Childhood Teachers’ Perspectives Of Teaching Children Who Are Experiencing Toxic Stress, Stephanie Renee Abell Jan 2021

Early Childhood Teachers’ Perspectives Of Teaching Children Who Are Experiencing Toxic Stress, Stephanie Renee Abell

Walden Dissertations and Doctoral Studies

A growing number of children entering early childhood classrooms are experiencing toxic stress. Early childhood teachers are responsible for meeting the educational needs as well as fostering their social and emotional development. The purpose of this basic qualitative study was to explore early childhood teachers’ perspectives of being challenged to support the emotional and academic needs of young children who are experiencing toxic stress in the early childhood classroom, which the research questions focused on. The theory of social constructivism was the conceptual framework for this study. Purposeful sampling was used to select 10 early childhood teachers to share their …


A Sense Of Hope: Parents Treating Their Epileptic Child With Cannabidiol, Jennifer Nguyen Potage Jan 2021

A Sense Of Hope: Parents Treating Their Epileptic Child With Cannabidiol, Jennifer Nguyen Potage

Walden Dissertations and Doctoral Studies

Epilepsy is the most common neurological condition in the world. Of those affected, about 30% are treatment-resistant, making it difficult for symptom relief. Children are also among those affected by epilepsy, and the unpredictable epileptic symptoms often induce stress, anxiety, confusion, depression for the parents/caretakers. Furthermore, epilepsy is a condition that can impair cognitive abilities, social interaction, and physical ailments. Antiepileptic drugs are the common medical treatment for epileptic symptoms. However, parents have often reported minimal positive change, ineffectiveness, and negative side effects that included nausea, fatigue, rash, insomnia, change in personality, cognitive impairment, and diarrhea. A review of the …


Perspectives Of Online Cda Recipients Regarding Development Of Expertise Without Apprenticeship, Victoria Lynn Long-Coleman Jan 2021

Perspectives Of Online Cda Recipients Regarding Development Of Expertise Without Apprenticeship, Victoria Lynn Long-Coleman

Walden Dissertations and Doctoral Studies

Little was known about how online Child Development Associate (CDA) credential recipients developed practical expertise in early childhood education (ECE) without the benefit of an apprenticeship. Learning the practice of teaching from a qualified more knowledgeable other (MKO) through an apprenticeship is a feature of teacher preparation in public school contexts but is missing in preparation for child care teachers. The purpose of this basic qualitative study was to explore how online CDA recipients developed practical expertise in ECE without a supervised apprenticeship. Vygotsky’s social construction of knowledge was the conceptual framework of the study. The research question addressed how …


How Prekindergarten And Kindergarten Teachers Supported Students' School Readiness Skill Development During The Covid-19 Pandemic, Eileen Manoukian Jan 2021

How Prekindergarten And Kindergarten Teachers Supported Students' School Readiness Skill Development During The Covid-19 Pandemic, Eileen Manoukian

Walden Dissertations and Doctoral Studies

Scholarly literature lacks studies on how prekindergarten and kindergarten (PK-K) teachers supported students’ school readiness skill development and successful transitions to formal schooling during the COVID-19 pandemic. Framed by school readiness theory and social development theory, this qualitative study explored perspectives of 16 PK-K teachers to answer two research questions about how teachers support students’ school readiness skill development foster students’ successful transitions to formal schooling during the COVID-19 pandemic in a metropolitan area in the southwest region of the United States. Data were collected through one on one, semistructured interviews, and analyzed by following an inductive process using Saldaña’s …


Early Childhood Teachers' Perceptions Of Professional Learning Communities, Andress Devon Carter-Sims Jan 2021

Early Childhood Teachers' Perceptions Of Professional Learning Communities, Andress Devon Carter-Sims

Walden Dissertations and Doctoral Studies

Teachers are struggling to transfer newly acquired knowledge and skills from professional learning experiences into their classrooms. This study aimed to explore teachers' perceptions of how professional learning communities (PLCs) enhance elementary teachers' instructional practices based on interviews with teachers in a rural school district. Olivier and Huffman's theory of utilizing PLC to their fullest potential was used as a conceptual framework for the study. This framework highlighted five dimensions of meaningful collaborative learning to increase teaching and learning in schools. This was a qualitative study with semi-structured interviews of 10 certified elementary teachers who engaged in PLC. Interview transcripts …


Perceptions Of The Reggio Emilia Approach To Early Childhood Education, Brandon Harris Gantt Jan 2021

Perceptions Of The Reggio Emilia Approach To Early Childhood Education, Brandon Harris Gantt

Walden Dissertations and Doctoral Studies

Preschools provide a method of early intervention to prepare children for school. Reggio Emilia (RE) curricular approach widely used for early childhood education that has not consistently shown a positive influence on cognitive, social, and emotional development of young children. It is also unknown whether those who participate in the RE curricular approach perceive it to foster cognitive, social, and emotional development in early childhood. The purpose of this qualitative, exploratory case study was to investigate participant-perceived benefits of RE as a curricular approach. The conceptual grounding of the study was social constructivism because the RE curricular approach emphasizes the …


Exploring Eco-Friendly Strategies In Early Learning Businesses, Henry Smith Jan 2021

Exploring Eco-Friendly Strategies In Early Learning Businesses, Henry Smith

Walden Dissertations and Doctoral Studies

Some early learning business owners (ELBOs) lack implementation strategies for eco-friendly programs. ELBOs that can successfully implement eco-friendly programs in their organizations can promote long-term sustainability. Grounded in Freeman’s stakeholder theory, the purpose of this qualitative multiple case study was to identify ELBOs’ implementation strategies for eco-friendly programs. The participants comprised of three ELBOs from three certified eco-friendly organizations. Data were collected using semistructured interviews and analyzed using thematic analysis. Five themes emerged: (a) managing stakeholders’ expectations, (b) health and wellness for sustainability, (c) business sustainability, (d) environmental sustainability, and (e) partnerships and community involvement. A key recommendation is for …


Perspectives Of Transitioning Students With Disabilities From Pre-K To Kindergarten, Josette Joanne Farmer Jan 2021

Perspectives Of Transitioning Students With Disabilities From Pre-K To Kindergarten, Josette Joanne Farmer

Walden Dissertations and Doctoral Studies

Students with disabilities (SWDs) and their parents, teachers, and early intervention service providers face problem in a southern state about the transition process from Pre-K to Kindergarten. During transition SWDs and the stakeholders experience challenges with the Individual Educational Program, the physical environment of the new classroom, and new relationships resulting in delays or gaps in required services. The purpose of this bounded qualitative case study was to explore the perspectives of parents, teachers, and service providers on transitioning SWDs from Pre-K to Kindergarten and factors that influence the transition process. This study was guided by Bronfenbrenner’s bioecological model of …


Mathematics Methods For Early Childhood, Janet Stramel Jan 2021

Mathematics Methods For Early Childhood, Janet Stramel

All Open Educational Resources

This book is for the early childhood pre-service teachers, which includes the period from infancy until eight years of age. Mathematics skills must be taught in early childhood and children should be provided a foundation to succeed in elementary school and beyond.

Mathematics Methods for Early Childhood was designed to help early childhood teacher candidates develop an understanding of why lessons in early childhood should focus on mathematics in order to help children be successful. Young children are naturally curious, and the best time to begin mathematics is at a time while the young child's brain is rapidly developing. Mathematics …


Perspectives Of Family Engagement In The Migrant And Seasonal Head Start Program, Toni L. Mahaney Stubbs Jan 2021

Perspectives Of Family Engagement In The Migrant And Seasonal Head Start Program, Toni L. Mahaney Stubbs

Walden Dissertations and Doctoral Studies

The problem is that there is a significantly lower percentage of Migrant and Seasonal Head Start (MSHS) families (2%) volunteering in Head Start (HS) programs where 75% of volunteers are former or current HS families. The purpose of this qualitative case study was to explore how the local MSHS program incorporates family engagement through home and school experiences by examining how migrant family participants and teaching staff define family engagement, the role family engagement has on parent-teacher relationships, and how families enrolled in the local MSHS program are influenced by family engagement. The conceptual framework was culturally responsive teaching/practice. This …


In-Service Prekindergarten Educators’ Perspectives On Characteristics Of Professional Development That Influence Their Self-Efficacy And Performance, Schalette Poteat Jan 2021

In-Service Prekindergarten Educators’ Perspectives On Characteristics Of Professional Development That Influence Their Self-Efficacy And Performance, Schalette Poteat

Walden Dissertations and Doctoral Studies

AbstractResearch on how professional development has influenced teacher self-efficacy revealed that properly executed professional development promoted effective teacher practices and positive student outcomes. Bandura’s and Tschannen-Moran’s social learning theories were used in this basic qualitative study to address the problem of the lack of current investigations related to prekindergarten (pre-k) educators’ perspectives regarding professional development that influenced their teacher self-efficacy. The research questions focused on pre-k educators’ perceived characteristics of professional development that increased their confidence in their ability to be effective in the area of curriculum, classroom management, and motivating and engaging students. Findings from coding analysis of the …


Educators’ Perspectives On Strategies To Close The Achievement Gap For African American Elementary Students In Mathematics And English Language Arts, Keamber Denise Booker Jan 2021

Educators’ Perspectives On Strategies To Close The Achievement Gap For African American Elementary Students In Mathematics And English Language Arts, Keamber Denise Booker

Walden Dissertations and Doctoral Studies

There is a persistent academic achievement gap between African American and European American elementary students in mathematics and English language arts. The purpose of this basic qualitative study was to explore third through fifth-grade elementary educators’ perspectives on strategies used to narrow the gap in achievement for African American students in mathematics and English language arts from a school located in the southeastern region of the United States; consequently, the research question was developed to focus on these perspectives. The conceptual framework for this study was Ladson-Billings’s culturally relevant pedagogy. Purposeful sampling and snowball sampling were used to select study …


Teacher Perspectives On Implementing Social-Emotional Learning Curriculum At An International Baccalaureate Elementary School, Whitney Nicole Niles Jan 2021

Teacher Perspectives On Implementing Social-Emotional Learning Curriculum At An International Baccalaureate Elementary School, Whitney Nicole Niles

Walden Dissertations and Doctoral Studies

Teachers have difficulty implementing a social-emotional learning (SEL) program in the classroom at an International Baccalaureate (IB) elementary school in Georgia. As a district mandated initiative, elementary schools in the metro area have included SEL programs as an essential part of the curriculum to support the needs of the whole student. The purpose of this generic qualitative study was to explore teachers' perspectives on implementing SEL at an IB elementary school. The conceptual framework drawn from Rogers' diffusion of innovations theory, focuses on what an individual does to implement and adopt an intervention. The study's guiding question explored 15 IB …


Preschool And Kindergarten Teachers’ Perspectives On Effective Strategies And Practices For Supporting Self-Regulation, Cheryl Denise Thomas Jan 2021

Preschool And Kindergarten Teachers’ Perspectives On Effective Strategies And Practices For Supporting Self-Regulation, Cheryl Denise Thomas

Walden Dissertations and Doctoral Studies

Research indicates that young children need to be able to self-regulate their emotions and behaviors to be successful in preschool and later schooling. However, there is no consensus in the education sector regarding what constitutes best strategies and practices when supporting self-regulation in young children. The purpose and guiding research question for this qualitative study were to explore teachers’ perspectives on effective strategies and practices used to support self-regulation in preschool and kindergarten classrooms. This study was premised on Bandura’s social learning theory, which explains human behavior in terms of continual interaction between cognitive, behavioral, and environmental factors when attempting …


Preschool Teachers’ Perspectives On Engaging Fathers In Their Child’S Education, Jawan Marquis Burwell Jan 2021

Preschool Teachers’ Perspectives On Engaging Fathers In Their Child’S Education, Jawan Marquis Burwell

Walden Dissertations and Doctoral Studies

Preschool environments set the educational foundation for children in the early years. Despite the positive effects that preschool environments have on children and families, previous studies have shown that preschool teachers are challenged to engage fathers in their child’s education. The purpose of this basic qualitative study was to investigate preschool teachers’ perspectives on engaging fathers in their child’s education. The conceptual framework was based upon Bronfenbrenner’s ecological systems theory. The research question focused on the challenges that teachers encounter in engaging fathers in their child’s education. This qualitative study included individual one-on-one interviews with 12 teachers using an open-ended …


The Pre-School Teacher Experience Of Social Skills For Early Education Success, Cheryl Dorsey Jan 2021

The Pre-School Teacher Experience Of Social Skills For Early Education Success, Cheryl Dorsey

Walden Dissertations and Doctoral Studies

Abstract

Pre-school is foundational to future academic success, and social skills have been recognized as a critical component of that foundation. How pre-school teachers facilitate social skills development is an area requiring further study. The purpose of this research was to describe the experience of social skills development from the perspective of early educators. Attachment and social learning theories were used as theoretical frameworks to explore how early education teachers describe the social skills for early education success in young children and how early education teachers facilitate the development of important social skills. This study used a generic, qualitative design …


Teachers’ Perceptions Of Literacy Instruction With Autistic Students During The Covid-19 Pandemic, Heather Ann Marzenski Jan 2021

Teachers’ Perceptions Of Literacy Instruction With Autistic Students During The Covid-19 Pandemic, Heather Ann Marzenski

Walden Dissertations and Doctoral Studies

AbstractFamilies and educators have voiced concerns about the literacy skills of students with autism spectrum disorder (ASD), and the COVID-19 pandemic has amplified the situation. Pandemic era studies have demonstrated the ramifications that students with ASD have faced, including regression of literacy skills, lower grades, lack of support services, and subpar instruction. Teachers' perceptions remained unexamined in the pandemic era studies. The purpose of this basic qualitative dissertation was to examine teachers’ perceptions about the materials and strategies used to deliver literacy instruction during the pandemic for students with ASD. The conceptual frameworks that underpinned this study were self-determination theory …


Preschool Teachers’ Perspectives Of Professional Development Related To The Management Of Challenging Behaviors, Obioma Ijeoma Uche Jan 2021

Preschool Teachers’ Perspectives Of Professional Development Related To The Management Of Challenging Behaviors, Obioma Ijeoma Uche

Walden Dissertations and Doctoral Studies

AbstractMany young children enter preschool programs exhibiting challenging behaviors and are suspended from preschool at a rate 3 times more than K–12 students. Many preschool students who need help are instead suspended or expelled. The purpose of this basic qualitative study was to explore private preschool teachers’ perspectives on past or existing professional development opportunities related to children with challenging behaviors and the resources/professional development needed to support these students. Knowles’ theory of andragogy served as the conceptual lens for this study. Interview questions were developed to elicit in-depth participant responses to answer the two research questions on preschool teachers’ …


Social And Emotional Learning Program Implementation: Educators’ Perspectives Of Preparation And Support, Papani Saini Jan 2021

Social And Emotional Learning Program Implementation: Educators’ Perspectives Of Preparation And Support, Papani Saini

Walden Dissertations and Doctoral Studies

Teachers are not properly prepared and supported to implement social and emotional learning (SEL) programs in the United States. Teachers must be properly equipped to be successful throughout implementation, thereby allowing students to reap the benefits of SEL programming. The purpose of this basic qualitative study was to explore K-2 educators’ perspectives regarding the preparation and support they need to implement SEL programming. The conceptual framework for this study was based on Scheirer’s program implementation theory. The research questions focused on the perspectives of K-2 educators regarding the preparation and support they need for SEL program implementation. Purposeful sampling was …


Educators’ Roles In Promoting Foster Care Children’S Sense Of Well-Being In Early Childhood Settings, Francoise Erlich Snyder Jan 2021

Educators’ Roles In Promoting Foster Care Children’S Sense Of Well-Being In Early Childhood Settings, Francoise Erlich Snyder

Walden Dissertations and Doctoral Studies

This qualitative study addressed educators’ roles in promoting a sense of well-being in prekindergarten and kindergarten students in the foster care system in the southwestern United States. Bronfenbrenner’s bioecological systems theory framed this exploration of educators’ roles in supporting foster children’s sense of well-being. Purposeful sampling was used to recruit nine educators from three different school settings with a minimum of 3 years of experience working with students in foster care. Data were collected during digitally audio-recorded interviews that explored how two administrators, two curriculum specialists, and five teachers with 3 to 25 years of experience working with students in …


Barbadian Pk-3 Grade Teachers’ Perspectives Of Positive Behavior Support, Nicole Natasha Lynch Jan 2021

Barbadian Pk-3 Grade Teachers’ Perspectives Of Positive Behavior Support, Nicole Natasha Lynch

Walden Dissertations and Doctoral Studies

In Barbados, positive behavior support (PBS) has been introduced as an alternative to the use of harsh disciplinary practices, but Barbadian PK-3 grade teachers’ perspectives of PBS are not well understood. The purpose of this basic qualitative study was to explore Barbadian PK-3 grade teachers’ perspectives of PBS as an approach to managing classroom behavior. The conceptual framework for this study was derived from Bandura’s social cognitive theory and the PBS framework. The research question focused on Barbadian PK-3 grade teachers’ perspectives of PBS as an approach to managing classroom behavior. Semi-structured telephone and Zoom interviews were used to collect …


Pre-K Teachers’ Perspectives Regarding Support Needed To Meet State Reading Standards, Kwe'shonte Mathews Jan 2021

Pre-K Teachers’ Perspectives Regarding Support Needed To Meet State Reading Standards, Kwe'shonte Mathews

Walden Dissertations and Doctoral Studies

AbstractEarly literacy has been a topic of interest in early childhood education for centuries, but the effects of early literacy teaching practices are an ongoing and unresolved topic amongst early educational programs. The problem was that in urban areas many students read below their expected grade level, preventing them from achieving literacy success. The purpose of this basic qualitative study was to explore pre-k teachers’ perspectives in a large urban school district regarding the support needed to meet challenges implementing Georgia Early Learning and Development (GELD) Standards, while teaching pre-k students literacy, specifically phonemic awareness. The conceptual framework that guided …


Teacher Perspectives On Integrating Technology In Early Childhood Classrooms, Crystal Renee Crozier Jan 2021

Teacher Perspectives On Integrating Technology In Early Childhood Classrooms, Crystal Renee Crozier

Walden Dissertations and Doctoral Studies

The integration of technology in early childhood classrooms can be advantageous when used in meaningful ways. Early childhood teachers are utilizing technology in instruction; however, they are not always doing so effectively. There is a gap in practice regarding the factors that affect the choices of technology activities that early childhood teachers use. A study on what influences the decisions early childhood educators make when choosing the types of technology to integrate in the classroom was necessary to fill the gap in literature and enhance the technology practices of early childhood teachers. Using Bandura’s social cognition theory, the purpose of …


Early Grade Teacher Perspectives Of Struggling Learners And Later Mathematics Achievement, Crystal Ann Cuyler Jan 2021

Early Grade Teacher Perspectives Of Struggling Learners And Later Mathematics Achievement, Crystal Ann Cuyler

Walden Dissertations and Doctoral Studies

Students who were not identified with a learning disability or significant developmental delay (SDD) in prekindergarten, but may have undiscovered learning issues are often among the lowest performing students in mathematics when they reach upper grades. The purpose of this qualitative study was to understand kindergarten, first, and second grade teacher perspectives of early indicators of later difficulties in mathematics among children not identified as having learning disabilities or SDD in prekindergarten. A retrospective study was conducted in which the remembrances of early grade teachers were used to explore the difficulties children who were struggling with mathematics as fourth and …


Teachers’ Perceptions Of Strategies For Parents To Improve Reading Development, Chiekara Shaniecious Grace Waters-Jackson Jan 2021

Teachers’ Perceptions Of Strategies For Parents To Improve Reading Development, Chiekara Shaniecious Grace Waters-Jackson

Walden Dissertations and Doctoral Studies

The problem addressed in the study is the significant numbers of elementary school students who fail to demonstrate proficiency in reading/language arts as determined by the Georgia Milestones English Language Arts Test. The purpose of this basic qualitative study was to investigate teachers’ perceptions of effective research-based parental involvement strategies, materials, and training programs that may enable parents to help their children develop grade-level reading skills. Bronfenbrenner's ecological theory and Epstein's parental involvement model are the conceptual frameworks that guided this study. The research questions addressed effective strategies, materials, and training programs for academic success. Data were collected from individual …


Development And Validation Of A Scale To Explore Pre-Service Teachers’ Sense Of Preparedness, Engagement And Self-Efficacy In Classroom Teaching, Jessy Abraham, Tania Ferfolja, Aaron Sickel, Anne Power, Christina Curry, Denise Fraser, Karin Mackay Jan 2021

Development And Validation Of A Scale To Explore Pre-Service Teachers’ Sense Of Preparedness, Engagement And Self-Efficacy In Classroom Teaching, Jessy Abraham, Tania Ferfolja, Aaron Sickel, Anne Power, Christina Curry, Denise Fraser, Karin Mackay

Australian Journal of Teacher Education

Raising the quality of initial teacher education can make an important contribution to raising the overall quality of the school system. In Australia, the National Framework for Professional Standards for Teaching is used as a common framework to set standards for the accreditation of teacher education programs. However, institution-wise assessments need to be carried out regularly to explore the quality of preparation pre-service teachers receive and to what extent they feel well prepared to enter teaching. This will enable teacher education programs to implement strategies to strengthen the link between university coursework and professional practice of pre service teachers. This …


Aboriginal Community-Led Preservice Teacher Education: Learning From Country In The City, Katrina Thorpe, Cathie Burgess, Suzanne Egan Jan 2021

Aboriginal Community-Led Preservice Teacher Education: Learning From Country In The City, Katrina Thorpe, Cathie Burgess, Suzanne Egan

Australian Journal of Teacher Education

In Australia it is well documented that teachers continue to struggle with implementing Aboriginal content, pedagogies and engaging with Aboriginal communities. This paper describes a research project analysing place-based learning for preservice teachers at an urban university led by Aboriginal community members. We argue that place-based learning is critical in developing preservice teacher’s knowledge and confidence in Aboriginal education. Surveys, individual and group yarns provided in-depth data from 64 participants completing elective courses including place-based ‘Learning from Country’ (LFC) experiences. Three key findings emerge from the data. Firstly, the utility of an experiential ‘learning by doing’ approach, secondly, the profound …


Creating Greater Awareness Of The Australian Professional Standards For Teachers In Initial Teacher Education, Melissa Cain, Chris Campbell Jan 2021

Creating Greater Awareness Of The Australian Professional Standards For Teachers In Initial Teacher Education, Melissa Cain, Chris Campbell

Australian Journal of Teacher Education

Throughout their initial teacher education training in Australia, students are informed about the Australian Professional Standards for Teachers (APST) and the necessity of gathering evidence to achieve these for teacher registration. Whilst the use of digital technologies as tools for reflection has become increasingly popular, there remains a paucity of research around the types of digital technologies that students use to document their ability to achieve accreditation requirements. This study presents details of how PebblePad, a specialised ePortfolio platform, can assist teacher education students to gain increased awareness about the 37 APST descriptors through the use of tagging. Results demonstrate …


The Exclusive White World Of Preservice Teachers’ Book Selection For The Classroom: Influences And Implications For Practice, Helen Adam, Anne-Maree Hays, Yvonne Urquhart Jan 2021

The Exclusive White World Of Preservice Teachers’ Book Selection For The Classroom: Influences And Implications For Practice, Helen Adam, Anne-Maree Hays, Yvonne Urquhart

Australian Journal of Teacher Education

This paper reports on a study of the children’s book preferences of 82 Preservice teachers (PSTs) at one Western Australian University. The study found PSTs preferred older books published during their own childhood or earlier. Further, representation of people of colour was limited to only 8 of 177 titles listed by PSTs. Key influences on their preferences were their personal favourite books and those used by mentor teachers during practicum experience. The outcomes of this study have implications for curriculum development and implementation of Initial Teacher Education courses, and in turn, for equitable outcomes of the future students of PSTs.