Explanation of Phonics

* I P A: (國際音標) International Phonetic Alphabets consists of 24 vowel and 61 consonant sounds.

* I checked a set of 1913 Webster’s Dictionary consisting of 13 big books, it had no Schwa sound ∂ in there at all.

 Phonics has been used as the main phonetics in English speaking world since the 17th century, because of its simplicity and ability to differentiate the vowel sounds. But by the lack of an undistinguished sound it had been criticized as too simple and unscientific (inaccurate), and was replaced by the I PA in some Asian countries  (China, Japan, Taiwan and Korea ,etc).But in America Phonics has never lost the battle, in the contrary by adding an undistinguished Schwa sound ә quietly around the mid-twentieth century, Phonics turn out to be the most dominant phonetics system in this country by possessing all the good qualities of simplicity ,accuracy, easy to acquire, and to promote spelling, etc.