One‐teacher schools in America

Abstract

At the turn of the century some 200,000 one‐teacher schools were in existence in the United States. This number now stands at approximately 380. A study of these schools found them to be staffed with qualified teachers with extensive experience. The teachers are typically female and live near where they teach.

Teachers work an average of nine hours a day teaching all subjects including physical education and music. Other activities include custodial duties, driving the school bus, performing secretarial functions, ordering supplies, and lunch supervision.

Student enrollment has a present average level of 9.4, a level that helps teachers meet the needs of each student. Low enrollment may also create concern about school closures in the future. Teachers indicate that they use individualized instruction, peer tutoring, and cooperative learning. They have few discipline problems and no violence or drug issues.     

Studying innovation in science teaching: the use of repertory grid techniques in developing a research strategy

Summaries

English

Conventional correlation studies are of limited value in research aimed at discovering why curricula are successful or unsuccessful. Their basic weakness is that they offer little scope for revealing how and why innovations become modified in practice as a result of their interaction with contextual constraints such as teachers’ views of their own roles and purposes. Observational studies and the collection, through interviews, of participants’ accounts can to some degree remedy this deficiency. However, such methods encounter problems of subjective data interpretation and of establishing their reliability.

In a study of the implementation of an innovative science curriculum, the Schools Council Integrated Science Project (SCISP), in three English comprehensive schools, the authors experimented with the use of repertory grid techniques based on personal construct theory: This allowed interviews of teachers to be conducted in such a way that categories were revealed rather than imposed and provided data which could be subjected to conventional statistical analysis. Some factors crucially affecting curriculum innovation were identified which might not have been readily discovered by the application of either trait measurement or ethnographic methods.     

Career evolution and knowledge of elite coaches of swimmers with a physical disability

In the last decade there has been an increase in empirical research on coaches of elite able-bodied athletes, while coaches of athletes with a disability have generally been overlooked. Thus, the purpose of the current study was to address this oversight by examining the career evolution and knowledge of these coaches. Six elite coaches of swimmers with a physical disability were interviewed using an unstructured, open-ended interview format. Results revealed information pertaining to the coaches' backgrounds, career evolution, and knowledge in training and competition. As well, all coaches stressed the importance of coaching their athletes as an elite swimmer as opposed to coaching a swimmer with a disability.     

Spatial characteristics of professional tennis serves with implications for serving aces: A machine learning approach

This study sought to determine the features of an ideal serve in men’s professional tennis. A total of 25,680 first serves executed by 151 male tennis players during Australian Open competition were classified as either aces or returned into play. Spatiotemporal (impact location, speed, projection angles, landing location and relative player locations) and contextual (score) features of each serve were extracted from Hawk-Eye data and used to construct a classification tree model (with decision rules) that predicted serve outcome. k-means clustering was applied to the landing locations to quantify optimal landing locations for aces. The classification tree revealed that (1) serve directionality, relative to the returner; (2) the ball’s landing proximity to the nearest service box line and (3) serve speed classified aces with an accuracy of 87.02%. Hitting aces appeared more contingent on accuracy than speed, with serves directed >5.88° from the returner and landing <15.27 cm from a service box line most indicative of an ace. k-means clustering revealed four distinct locations (≈0.73 m wide × 2.35 m deep) in the corners of the service box that corresponded to aces. These landing locations provide empirically derived target locations for players to adhere to during practice and competition.     

Microsaccades and interest areas during free-viewing sport task

Microsaccades are important fixation eye movements for visual scene perception. Compared to novices, athletes make fewer fixations of longer duration toward limited interest areas crucial for action prediction. Thus, our aim was to study the microsaccade features during those fixations. Gaze behaviour of expert and novice table tennis players was recorder during a task in which subjects were instructed to predict the direction of the ball after the opponent’s throw. Three interest areas from the opponent’s body and one from the ball trajectory were identified. We analysed correctness of predictions, fixations, microsaccades and saccades to estimate the relationship between eye movements toward interest areas and success in the task. Compared to novices, experts fixated more on hand-racket during forehand and on trunk during backhand drive technique. Longer fixations on hand-racket and trunk were associated with higher microsaccade rate with a narrower directional distribution of them. It probably means that athletes focused their gaze on these small areas, suggesting enhanced attention mainly to them, and fewer consideration for the surrounding regions. We can assume that microsaccade rate and average direction could be related to the salience of interest areas during performance.