Online learning is one component of the broader category of distance education. This mode of learning generally refers to any learning, which separates the instructor of the students either, time or place. For a long time, this type of learning that has happened in the form of correspondence study. There are two types of learning that are common in today’s online practice. Are asynchronous and synchronous forms of teaching (Kevin, 2009). Synchronous literally means at the same time. In this type of training, students interact with the instructor via the web in real time. In asynchronous training, students receive the instructor’s job to carry in one’s own time convenience (Fisk et al, 2009).
Synchronous training time is not very common due to the technical aspects involved in its implementation. This training requires that students who are geographically dispersed to access the same Web page while the instructor. In this training, the instructor of streaming audio materials to students through web-based audio or teleconference call (Kevin, 2009). The instructor uses slides that students see as connected to the conference website. Students have the opportunity to interact with the instructor through chat or audio asking questions over the phone. This type of training is best suited for academic programs, such as additional college distance learning or continuing education programs. Asynchronous learning is more common, which creates an on-demand, just in time learning experience for the student (Fisk et al, 2009). In this case students are not required to schedule your time online with the instructor. This training is presented in more flexible forms of training being provided as regards self-paced asynchronous. In the asynchronous training provided, the teacher interacts with students at different times (Fisk et al, 2009). The instructor posts assignments in materials such as a web page, including all the necessary references to students. Students are able to discuss and interact with each other through discussion forums and then submit their work by email to the relevant authorities. Students in this type of training enjoy a lot of interaction with other pairs of wire web-based discussion (Fisk et al, 2009). A limitation of this type of training is the lack of oral communication, which implies that the concept is not difficult to learn properly explained to the students. There is also the challenge of setting times among students who are geographically disconnected from the instructors. self-paced instruction is more common in the business to their academic institutions. In this statement, Sale of materials only published online by instructors that are accessed and completed online. The materials of this type of instructions that may include assessment exercises, simulations of guided discovery learning and tutorials.
The evolution and expansion of computer technology has gone hand in hand with a revolution in online continuing education. In today’s workforce, the requirement for professional development through training is essential to compete effectively. For working adults, the acquisition of such development is necessary to require more time involvement is limited in light of their family and social responsibilities. The online learning tools have been developed as a tool to reduce some of the dilemmas experienced by individuals limited by time and space. Online learning has been able to overcome the challenges of physical barriers and time constraints. Increasingly, colleges have developed training programs in line with the authority empowered by a rapid increase compared with the previous year. The revolution in online learning arose from the need for institutions to meet the educational desires and activities of nontraditional students who are limited in time due to other commitments of full time. The invention of evening classes and weekends do not fully meet the needs of adult education in the weekends are tied to family obligations. Therefore, online education has emerged as the definitive answer to these groups of students (Askov & Simpson, 2001). For online education to succeed, it is required that students, such properly exposed to computer literacy. This has been driven by the rise of familiarity and public exposure of general use of computers in the past two decades. Internet users in North America have soared significantly to an estimated 251.735 million, an overall increase of 73.9% in North America compared to 2000, when Internet users is estimated that 108 096 800 (Miniwatts, 2009 .) This is an indication that more and more people are using the Internet. The statistics are an indicator of the potential number of people who do online training institutions can access with little input of resources. As a result, the new millennium has witnessed a large number of institutions active in the development of online programs designed to meet international standards and students.
Hybrid / Blended Instruction
A significant number of universities have adopted the hybrid learning. hybrid learning is often used interchangeably to refer to blended learning. In this tutorial, which is now common in online instruction, traditional face to face instruction is integrated with the well-organized web-based modules. In the learning process, a significant percentage of the face to face conventional instruction is replaced by the online (Koohang and Durante, 2003). hybrid learning is a lot of applications in courses containing practical experiments where students have to do physical tasks such as requirements for the course grade. In radiology, this type of learning would be more appropriate since it would give students the opportunity to interact with biomedical devices for the physical interactions and meetings with teachers. The face to face, experience also gives students the opportunity to clarify the questions and explanations that are difficult to understand the printed material sent via the web. The advantages of this type of learning, as found in the literature are flexibility, greater interaction, reducing the time of safety, convenience, reduced costs and likely increase learning. The challenges associated with hybrid instruction have been cited as the complexity of the development programs that would be useful for instructors and students. This is bearing in mind that online programs to serve students in remote regions and countries (Koohang and Durante, 2003). There is also the challenge of allocating time to redesign courses and the adaptation of students to learn in hybrid systems.
History Online Learning
Modern information technologies have been used over time to create and support educational institutions. Change in years has forced technology continually changes in teaching techniques to meet the most current and reliable techniques. During medieval times, educational exchange was conducted oral transmission and students were forced to rely on memory and word of mouth. The invention of paper and printing revolutionized the learning that is now using the books (Sumrall, 2002). The change to the books facing challenges such as the cataloging of books and this called for the development of systems that could support instruction book easy to use. The need to integrate technology with education is a constant requirement as new technology is bound to occur continuously. In the 21 st century, the challenge facing education is the need to incorporate the Internet and related tools to update e-learning (Sumrall, 2002).