1. We always hear the word "blackboard" when all we see is green chalkboard in the classroom. Can you find out why?
In the 1960s, blackboards were replaced with steel boards, coated with green porcelain enamel. This was a good thing because the chalk dust after erasing was not as noticeable. But, the real reason is researchers found that humans are sensitive to the green color, so a green board has a calming effect on the eyes, and keeps the eyes from getting as tired as they might have with a blackboard. Also, the contrast between the chalk and the green is easier on the eyes.Some people started calling them chalkboards, but old habits are hard to break, and you can still find people calling them blackboards today. So, even if you call a green board a blackboard, at least you know the answer to the question, “Why is the blackboard green?”
2. What is Project based multimedia learning? What Principles of teaching are very much illustrated by PBML?
Project-based multimedia learning is a method of teaching in which students acquire new knowledge and skills in the course of designing, planning, and producing a multimedia product.
The principles of teaching that is very much illustrated in PBML is to teach effectively. teachers uses PBML so that students enhance skills in using computers in making projects, assignments. Above all learning is there.
3.What are the elements of PBML?
A classic project-based learning activity usually involves 4 basic elements: (1) an extended time frame; (2) collaboration; (3) inquiry, investigation, and research; and finally, (4) the construction of an artifact or performance of a consequential task. Within this basic framework, students and teachers can adapt activities to showcase and assess understanding.
4.Why we use PBML?
In multimedia projects, students do not learn simply by “using’ multimedia produced by others. As students design and research their projects, instead of gathering only written notes, they also gather and create pictures, video clips, recording and other media objects that will serve as the raw material for their final product.It is a powerful motivator students engaged in the creating in multimedia projects. It makes teachers look for and apply the methods that optimize learning effect.It makes teachers structured the form of material.
5.What are the disadvantage of the use of PBML?
Misuse or overuse of media: Many multimedia programs are basically a technological remake of an existing technology. Oftentimes this "remake" consists of "bells and whistles" simply for the sake of having "bells and whistles," rather than improving the learning potential.
Limited structural guidelines: Because multimedia is a relatively new field, it is difficult to measure or compare new multimedia programs to any standard, as none exists As a result, distance education providers have limited structural guidelines upon which to base their operations.
Limitations of technology: Multimedia that transmits across networks between the supporting organization and the personal computer takes up bandwidth. A user with an older modem or a slower processor may not have access to the video, audio, or graphics required in a particular module.
Limited support: When multimedia technology is implemented, technical support for learners and faculty is often non-existent. This can result in the misuse of the technology.
Difficult adaptation: Not all learning styles easily adjust to multimedia learning. For example, Gregorc’s Abstract-Random (AR) learners are capable of adapting to other teaching methods, but the long-term "style flexing" can be stressful.
Cost: The price of upgraded technology, as well as costs of hardware and software, can be substantial to the supporting organization when implementing and operating a multimedia instruction program. Learners incur costs as well. They must have access to advanced technology (e.g., upgrade their home computers or purchase a new computer in order to participate in the course). The cost of training instructors in the new technology must also be considered.
6.What are the steps involved in the PBML strategy?
First it must have been a motivation, goals and objectives. Plan for what to do. It require access to learning resources, which can support concept development by learners in a variety of ways to meet individual learning needs. The development of multimedia technologies for learning offers new ways in which learning can take place in schools and the home.
