DS4OERS/Audiographic/Graphic



In this section, you will create a graphic (in a subject area of your choice), to incorporate into your audiographic.

Value of charts and diagrams as visual aids
Using charts and diagrams is an effective teaching strategy to help learners see concepts visually. Diagrams are useful because they can show relationships between concepts, illustrate processes, and summarise or simplify complex topics. Visual aids can be used in each part of a lesson, i.e. the introduction or problem formulation, the presentation of new knowledge, application, and conclusion.

Setting the correct image size
Before starting work on a diagram, it is important to set the correct image size ratio. Your audiographic will eventually be in a video file, so we must choose the correct image size so that the background fills the full screen of the video area (without gaps on the sides of the video display area).

Fortunately, LibreOffice Draw provides two default format pre-set options when producing images for use on screens. Open LibreOffice Draw, and, from the main menu, go to 'Format' and select 'Page properties'. Here, you can choose between the following formats:


 * Screen 4:3 ratio (standard screen size) - suitable for older screen resolutions
 * Screen 16:9 ratio (wide screen size) - suitable for modern screen resolutions including most computer screens, TV displays, and smart-phones (in landscape mode).

We recommend that you produce video using a 16:9 aspect ratio, and select this option before you commence work on producing a graphic. These days, 16:9 is is the most widely used format for digital video.

Make sure that you select Landscape orientation for your image.

When you export your image, you need to specify the resolution in pixels (both height and width) to ensure that the image fills the full screen area of the video. When 'rendering' (or generating) the video, we recommend that you use High Definition or Full High Definition. The corresponding pixel sizes for exporting images are summarised in this table: