Modern teaching aids help make the classroom live and interactive. They avoid dullness in the class through the use of actual objects rather than just books. The teaching aids can be visual, audio or audio-visual. Maps, charts, models, pictures, projectors and slides are all examples of visual aids. Audio aids include gramophone, tape recorder, radio, etc. Film projectors fall in the audio-visual category.
Among all these aids, teacher PowerPoint presentations are gaining increasing popularity. It helps in the organization of material at hand. It also helps to streamline dense texts. The major points can be outlined in the slides and the teacher can discuss them in greater detail in class. It also instigates student participation. A step-by-step representation also ensures that nothing important is missed. Visuals, animations and sounds can also be used in the presentation but should not be distracting.
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