PronSci charts

The set of PronSci charts is made up of a Rectangle chart, a two-part Spelling chart (also known as a Fidel), and 16 Word charts. The charts are shown in full below.


Other pages show supplementary teaching materials, have information about chart sizes, prices and training, and show the Silent Way word charts for English, French and Spanish.



The PronSci Rectangle chart is organised along articulatory lines. Each coloured rectangle represents a sound of English. (The key to the layouts can be found in the download below the pictures.)

Sound-color chart (PronSci and Silent Way)
American English Rectangle chart (single click to enlarge)
Sound-colour chart (PronSci and Silent Way)
British English Rectangle chart (click to enlarge)
PS Rectangle charts, layout diagrams.pdf
Adobe Acrobat Document 1.9 MB

This document includes black and white versions of the charts with IPA symbols (as below), in a design suitable for self-study and a bolder design for the classroom wall. These can be freely reproduced.


You can see the first of three linked videos describing the reasons for the layout here.

These charts can be used in two different ways: either (1) as simple phonemic charts or (2) using some advanced features which enable the teacher to work in a more sophisticated way on stress and reduction.

As a simple phonemic chart.pdf
Adobe Acrobat Document 1.3 MB
Using advanced features.pdf
Adobe Acrobat Document 1.3 MB

In the arrangement of the sounds on the charts, note that:

  1. The vowels, as well as the consonants, are organised by the movements needed to produce them.
  2. The vowels are presented as either high or low energy, at the top and bottom of the chart respectively. This clearly differentiates the 'normal' vowels from schwa and the other reduced vowels.
  3. The consonants, in the middle section, are arranged by place and manner of production as conventionally done. But their grouping also reflects the distinctive articulatory setting of English.

Note that while the charts can be used to support any approach to the teaching of pronunciation, they are well adapted to those who use an Articulatory Approach. The theoretical underpinnings for their layout are described in the download below. 

Phonetic Guide to PronSci Rectangle char
Adobe Acrobat Document 1'020.2 KB

The Spelling chart (Fidel) shows the complete relationship between sounds and spelling in English. Its overall organisation is the same as that of the rectangle chart, so sounds appear in the same colour and in the same location on each.


One of the advantages of using colour for sounds rather than using IPA symbols, is that words can be written normally, but with their pronunciation apparent at the same time.


Any word in English (except for unusual proper names) can be spelled out using the groups of letters on the Fidel, with the word's correct pronunciation indicated by the colours chosen. Letters and letter combinations that are part of the underlying spelling system are printed in a larger size than those that are needed for just a few words.

Fidel (PronSci and Silent Way)
British English Spelling chart (Fidel), from Individual size set
Fidel vowels (PronSci and Silent Way)
British English Spelling chart (Fidel) - vowel section (single click to enlarge)
Fidel consonants (PronSci and Silent Way)
American English Spelling chart (Fidel) - consonant and weak vowel sections (click to enlarge)

A full key is provided with the Fidel, with example words for each spelling and information about phonetic symbols etc.

The sixteen Word Charts contain the functional vocabulary of English organised by parts of speech. The charts use the same colours as the Rectangle chart and the Spelling chart to indicate the pronunciation of words. The strong and weak forms of those words which have two pronunciations are shown by the dots beneath them.


As well as individual words, whole sentences can be pointed out. This enables students to work on the production of natural speech without having to follow a teacher’s model.

Word charts, American English 1-8
American English word charts 1-8, from the Individual size set (click to enlarge)

 The charts above are themed:

    # 1 Pronouns and demonstratives
    # 2 Articles, question words and function words
    # 3 - 4 More function words (in alphabetical order)
    # 5 Verb auxiliaries
    # 6 - 8 Common verbs and verb endings
    # 8 lines 8 & 9: gonna, wanna, haf to, etc
Word charts, British English 9-12
British English word charts 9-12, from the Small Class size set (click to enlarge)

 The themes for the charts above:

  # 9 Time, order and pronunciation irregularities
  # 10 Time triggers
  # 11 Adjectives and comparisons
  # 12 More adjectives, affixes and classroom verbs
Dates, family relations, numbers and colours (PronSci and Silent Way)
American English word charts 13-16 (click to enlarge)

 The themes for the charts above:

  # 13
  # 14 Family relations
  # 15 Numbers
  # 16 Colours and mathematics

The gallery below shows detail from the charts and the guides which are supplied with all sets.

Single click on a picture to enlarge it, or to start a slideshow.