Beyound the simple technique of speaking more slowly,
the best way to help listeners follow your ideas is to pause after each main point.
Even if you speak quickly in between pauses,
each pause gives your listeners time to think about what you have just said.
Listeners need to fit these ideas into their own knowledge of the subject.
Besides pausing,
you can slow down the rate of information by saying the same thing in different words.
This helps listeners to process each idea before the next idea is explained