Contiguity Principle: People learn better when corresponding words and pictures are presented near rather than far from each other on the screen or page or in time. (Jump between serval words caused people confused.)

Pre-training Principle: people learn better from a multimedia message when they know the names and characteristics of the main concepts (Before the presentation and meeting, emailing members the information of the topic to help them understand).

Animation principle: People do not necessarily learn better from animation than from static diagrams (Sometimes, digital tables and histograms are more intuitive than animation).

Redundancy principle: People learn better when the same information is not presented in more than one format（Highlight your keywords!!）

Redundancy principle: People learn better when the same information is not presented in more than one format （The text should be as concise and easy to understand as possible, too much text will easily consume the patience of the audience.）

Multimedia principle: compare with learning from words alone, the audience can learn better from both words and pictures.