These two charts bring together all the vowel sounds in American English and present them in a clear, scientific way, helping learners understand how each sound is produced and where it is articulated in the mouth.

The first chart organizes the vowel sounds according to their position in the vocal tract: starting with front vowels such as /ē/ and /ă/, moving through central vowels such as /ǒ/ and /ǔ/, and ending with back vowels such as /ū/ and /oo/. It also clearly distinguishes between short and long vowels, as well as diphthongs, and includes illustrative examples and phonetic mouth visuals to support accurate pronunciation.

The second chart complements the first by showing each vowel sound with its phoneme symbol and educational phoneme card, along with all the common graphemes that can represent it in English spelling, such as:
/ē/ → ee, ea, ie, e
/ī/ → i, igh, y, ie

plus other frequent spelling patterns in English.

✨ Together, these charts serve as an essential visual reference in the “Mastering American Pronunciation & Sounds” course, helping teachers, parents, and learners clearly understand the relationship between sound and spelling in American English in a way that is both simple and professional.