Development and Validation of a Scale to Explore Pre-Service Teachers’ Sense of Preparedness, Engagement and Self-Efficacy in Classroom Teaching

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 paper discusses the development and validation of a scale to measure pre- service teachers’ perceptions of preparedness to teach, readiness to engage with the teaching profession and self-efficacy in teaching. The study also proposes a model describing the relationship among these variables. Data was collected from 235 final year pre-service teachers using a newly developed questionnaire at an Australian university. Data shows that the Pre service Teacher Professional Experience (PTPE) scale is a theoretically sound, gender invariant and psychometrically valid instrument. The implications of using the scale in teacher education programmes are discussed in the context of the findings

Shark: introducing an open source, free and flexible semi-analytic model of galaxy formation

We present a new, open source, free semi-analytic model (SAM) of galaxy formation, Shark, designed to be highly flexible and modular, allowing easy exploration of different physical processes and ways of modelling them. We introduce the philosophy behind Shark and provide an overview of the physical processes included in the model. Shark is written in C++11 and has been parallelized with OpenMP. In the released version (v1.1), we implement several different models for gas cooling, active galactic nuclei, stellar and photo-ionisation feedback, and star formation (SF). We demonstrate the basic performance of Shark using the Planck15 cosmology SURFS simulations, by comparing against a large set of observations, including: the stellar mass function (SMF) and stellar-halo mass relation at z=0-4; the cosmic evolution of the star formation rate density (SFRD), stellar mass, atomic and molecular hydrogen; local gas scaling relations; and structural galaxy properties, finding excellent agreement. Significant improvements over previous SAMs are seen in the mass-size relation for disks/bulges, the gas-stellar mass and stellar mass-metallicity relations. To illustrate the power of Shark in exploring the systematic effects of the galaxy formation modelling, we quantify how the scatter of the SF main sequence and the gas scaling relations changes with the adopted SF law, and the effect of the starbursts H$_2$ depletion timescale on the SFRD and $\Omega_{\rm H_2}$. We compare Shark with other SAMs and the hydrodynamical simulation EAGLE, and find that SAMs have a much higher halo baryon fractions due to large amounts of intra-halo gas, which in the case of EAGLE is in the intergalactic medium.Comment: Final MNRAS version of accepted pape