When first learning how to write mathematical proofs, it is often easier for students to work with statements using the universal quantifier. Results that single out special cases might initially come across as more puzzling or even mysterious. In this article we explore three specific statements from abstract algebra that involve the number…

The purpose of this study was to determine the validity and reliability of the Power Walker® 610(PW) pedometer for step counting in children. The study sample was composed of 30 boys and 22 girls, from 8-13 years old. Participants were equipped with both a PW and a Digiwalker® SW-200(DW) pedometers and walked 400 m around an outdoor athletic track…

Psychological flexibility (PF), teaching resiliency (tRES), and sense of purpose (SOP) are characteristics that influence physical education teaching sustainability. The study's purpose was to validate an instrument measuring PF, tRES, and SOP relative to teachers' intent to remain teaching (IRT) in high poverty (>60% low-income) schools and…

Concurrent enrollment programs, which allow college credit-bearing classes to be offered in the high school taught by qualified high-school teachers, are a potential solution to the student debt issues impacting the United States and other countries. However, the learning environments of these rapidly-growing programs have never been studied.…

The authors developed and initially validated the Supervisee Disclosure in Supervision Scale (SDSS). Exploratory and confirmatory factor analyses with 2 independent samples revealed that the SDSS is a 17-item instrument with 2 subscales showing promising psychometric properties. The authors discuss the findings with implications for supervision…

This study was conducted to describe the validation of learning environment inventory (LEI) for secondary school contexts. A survey method was used for data collection through the 20-item LEI. This study consists of two phases. In Phase 1, an exploratory factor analysis (EFA) was conducted using the Statistical Package for Social Sciences (SPSS…

Developing communication skills is critical for all young children, especially for those receiving early intervention (EI) services. Thus, many researchers have investigated evidence-based practices for teaching social communication skills. In an attempt to minimize the gap between research and practice, research investigating training caregivers…

In order to reach valid and reliable test scores, various test theories have been developed, and one of them is nonparametric item response theory (NIRT). Mokken Models are the most widely known NIRT models which are useful for small samples and short tests. Mokken Package is useful for Mokken Scale Analysis. An important issue about validity is…

The purpose of this study was to develop a questionnaire to assess body posture habits in adolescents' daily activities. To develop and assess the instrument we used the Delphi method, and a test-retest reliability design. The questionnaire consisted of 31 questions with 4-level Likert scale. One hundred and sixty-eight students were studied, 72…

Background: Families of children with disabilities often face unique challenges. Developed in a U.S. context, the Beach Center Family Quality of Life measure assesses the effectiveness of supports and services that families receive. This study examines whether items from three sub-scales of the Beach Center instrument perform similarly for two…

The aim of this study is to determine the scope validity of the graph drawing interpretation skill checklist that can be used in social studies teaching. The literature review was made while the draft skill checklist was prepared at first. There have generally been some graph drawing and interpretation skill checklist studies at secondary and…

The purpose of this study is to contribute to a better understanding of the complexity of conceptualising and measuring learner engagement in Massive Open Online Courses (MOOCs). The paper develops and validates a MOOC engagement scale (MES) to measure learner engagement. The initial questionnaire items of the scale were developed by reviewing…

Comprehensive sexuality education (CSE) is a key component of efforts to improve sexual and reproductive outcomes for young people. While many governments have established policies and curricula for CSE, there are no quantitative measures of the quality of their implementation in schools. We describe the construction of a school-level index to…

Digital competence is a basic skill for citizens and should be systematically assessed, taking into account characteristics such as knowledge, skills and attitudes. However, measuring and identifying the digital competence of students is still a major challenge. To this end, the indicator model (INCODIES) has been developed and validated following…

Mentoring is suffering from a shortage of trained mentors which compromise the efficacy of novice mentoring or mentoring between a senior clinician and a junior clinician. E-mentoring is proposed as a means of supplementing this dominant form of mentoring in medicine by providing accessible, timely and longitudinal support for mentees. However,…