What is a Visualizer?
What is a Visualizer?
The modern teacher uses in hiswork a lot of useful devices that help to simplify the learning process and make it more efficient. To such devices it is possible to carry a document camera, with its help it is possible to form an image of any object in real time.
The document camera is an electronicA device by which any object is displayed in an enlarged view. It can be connected to a computer monitor, a TV or a video projector - in this case, viewing is possible even on an ordinary wall.
How to choose document camera
When choosing a device, you need to take into account the various characteristics, on which the quality and convenience of work will depend.
- Dimensions. Along with portable document cameras weighing 2-3 kg, there are desktop models with a built-in light plate.
- The tripod can be flexible or mechanical. The first is much more convenient, because it allows you to aim the camera more accurately.
- Type of output. The camera can be equipped with a USB output for connection to a computer, with VGA / TV / DVI connectors for connection to a projector or TV.
- Optics determines how much and how qualitatively the image will be enlarged. If the optical zoom really increases the resolution, then the digital only visually approximates.
Application of the Visualizer
Most often, document cameras are used in schools,universities, colleges. To interest students and students, teachers try to make the lessons interesting and interactive, work with the document camera contributes to this. Even the analysis of the last test work will attract the attention of the students, if everything happens in real time on the monitor screen.
The application of the Visualizerissues. Teacher or presentation can show a large audience any text, slide, subject. This can be a complex physical or chemical experiment, which is best done at a safe distance or an enlarged image of an optical microscope.
Preparing for a presentation or lesson significantlysimplified. It is enough just to copy the necessary drawings from the book, draw a graph on A4 sheet - and they will be available for viewing to the whole team. Document camera in the classroom becomes an indispensable alternative to posters and complex benefits.
