The Silent Way is one of my favorites because it is simple and as it says, it does not require the teacher to be a participant in the activity.
It was founded in 1970 by the Egyptian educator and mathematician Caleb Gattegno.
Some techniques are:
Sound-color chart: it contains blocks of colors and then the teacher or student points out in order to form syllables, words, and sentences.
This method has the main principle of giving support to the student when needed, errors are important for learning, student attention to the teacher is important, transferring students´ ideas, and progress is more important than perfection, etc.
The activity we developed was using rods, where we built sentences according to the color of the rod and the part of the speech. In the second class, we developed a similar activity with rods, although this time we created a story with them.