The purpose of this study is to develop and assess a model aimed at teaching astronomy to deaf students. Thus, a 7 day-long project of indoor and outdoor activities was developed. Since the purpose of our study was to teach astronomy to deaf students, our sample was determined by using purposeful sampling technique. The sample of this study…

The present paper describes the recruitment and site selection process that has been underway since January 2011, with particular emphasis on the use of Mahalanobis distance score to determine matched pairs of sites prior to randomization to treatment and control groups. Through a systematic winnowing process, the authors found that they could…

This study aimed at finding out the effects of Mastery Learning Approach (MLA) on students' achievement in Physics. The study was Quasi-experimental and Solomon Four Non-equivalent Control Group Design was used. The target population comprised of secondary school students in Kieni East Division of Nyeri District. The accessible population was Form…