Computer technology can catalyze the paradigmatic shift in both content and pedagogy that is at the heart of education reform in the 21st century. Computer-supported education can promote the acquisition of the knowledge and skills that will empower students for lifelong learning. Computer Assisted Learning (CAL) is based on the principles of constructivism. In modern age, it is a very challenging job of the teachers to use computer for student learning. Thus the book is written in a simple, clear and lucid language keeping in view the needs of students and teachers of all disciplines as well as pupil-teachers and teacher educators.