The book examines effects of action learning and inquiry-based instructional strategies on secondary school students'learning outcomes in Physics. It also critically examine the effects of numerical ability and gender on students' attitude and achievement in physics. It is believed that physics students and educators will find this book interesting which will help at improving enrolment and achievement of physics students in schools. Physics educators and researchers reading through this book will discover ways of creating and substainig action learning in physics classrooms which is one of the teaching strategies that has helped to sustains learners' interest in physics as well as their achievement.