The idea of using a pyramid comes from the concept of a good foundation. A good foundation is needed to build a solid pyramid.
The same idea applies to learning English.
If a solid ”phonetic” foundation is established early, then you can continue to build on that foundation and your English skills will improve.
By using these books, you will not only be learning the American way of sounding out words, but you'll also be guided by K.K. phonetics.
They are especially designed to give you that solid foundation so you will want to continue practicing English throughout your life.
The photo presentation below outlines the four main products in The Pyramid Method and the teaching principles behind its success.