Write eight advantages and disadvantages of multimedia in secondary school chemistry experiments?
I need in points
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Answer:
Practical Advantages to Using Multimedia
A major advantage to using multimedia sources in the classroom is the ability to bring in images, sounds and videos without leaving the room. Computer programs and internet sites can also give students experiences that might ordinarily be unsafe, such as views from scaling mountains in a geography lesson or a dissection of a rare animal. Additionally, using a projector or individual computers gives students the opportunity to view information or materials up close.
Educational Advantages to Using Multimedia
Students who learned from materials containing both text and graphics produced 55 percent to 121 percent more accurate solutions to problems, according to David Taylor at the University of Maryland. The use of images, along with words, diminishes the overwhelming nature of text and helps the student to manage the cognitive load, which increases retention. Specifically, graphics are found to support retention because important elements are focused on via placement, layout and color. Activation of prior knowledge is engaged quickly with visual analogy, and mental models are created easily as diagrams can enhance understanding of how a concept works. Additionally, learning is made easier because simulations allow students to visualize real-life situations, and motivation is increased as students are able to see the relevance of skills.
Practical Disadvantages to Using Multimedia
Multimedia lessons or components of lessons delivered via video or image require computers, projectors and other electronic devices depending upon the subject and the amount of original material a teacher creates. The expense associated with quality projectors or computers for every student can be quite high, and the amount of images and videos in a lesson can slow down the delivery and pace of the class as a result. Student access to computers at home may also cause problems, and varying quality of student electronic devices can create inequity in projects and presentations.
Educational Disadvantages to Using Multimedia
When designing a multimedia learning experience, the role of the teacher shifts from instructor to facilitator. If a lesson allows students to complete learning at their own pace as they move through stages of learning, classroom management becomes increasingly difficult. This is particularly true if students work in groups to view multimedia sources or share computers. Additionally, students who are not as proficient with technology may have to spend more time learning computer skills to access information than focusing on course materials.
