Theory of cognitive load

Measure the competence of listeners and submit information appropriately
The more you are competent in some area, the more information and schemes are available to you. Remember, no matter how complicated the circuit, the brain it is considered as a unit of information. That is why it is worthwhile to prepare and submit the material so that it reflects the level of competence of the listeners. Ask yourself these questions:

What is my audience?
What kind of information will I report?
Why is it so important?

Reduce the problem location
If the gap is too large, human memory becomes congested.

This often happens when a complex situation arises and a person is forced to "move back." That is, he no longer perceives and does not analyze the current information and simply tries to keep in memory all possible elements. Focusing on the goal also does not bring anything good - it distracts from information and disappears from the head, once the goal has been achieved. In both cases, the gap increases.

Reduce the effect of divided attention
When you use several sources of information - diagrams, text, auditory information, your audience's attention begins to dissipate. There is a cognitive load and the brain is very difficult to create circuits.

If you decide to focus on delivering auditory information, take care to exclude all extraneous sounds.

Use audible and visual channels for working memory
Serve audible and visual information in turns, because the audience in front of you is completely different. In addition, it is useful sometimes to switch attention from the picture to the voice. So simple trick you will be able to keep the attention of both audial and visuals.