We can talk using books, mind maps, photography. We should know how to speak then
I shall be able to understand what the other person is saying. Speaking is about pronouncing the words, as each person will say differently and there will be confusion. Speaking is about speaking English.
We can learn speaking the language, the words, grammar and sentences. By reading books and books and people and see videos.
While working on this objective I also realized that we also need to look at the effect of our words our style of language on others and self. The same was shared with children and what followed was a discussion. Few shared yes when I listen to someone, I forget what they have spoken but I remember what it did. Sometimes when others speak I see their facial expression and I try to understand what they said.