The table organizes the Grapheme—Phoneme Correspondences (hereafter as GPC) for English. Each row is dedicated to one sound. The first 5 cells in each row supply various information about each row. The IPA column gives an IPA character that represents the sound. Clicking on the IPA cell plays the sound for that row. Thereafter, each cell in the row represents a spelling pattern used in English to represent that sound in order from greatest number of words to lowest. This chart reflects a general Canadian pronunciation of English. Other regional English accents would have slightly different arrangements if they were charted.
Clicking on column headers sorts the table by that column. Clicking on the same column header a second time reverses the sort.
Cells can contain a variety of information. Every cell contains one spelling form (GPC) and a keyword which illustrates that spelling form. If there are 1 syllable words associated with that cell or page, the spelling form and keyword are hyperlinked. Clicking on them reveals the words associated with that form in the textbox on the sidebar. Each cell also has a number in red. This refers to the total number of words associated with that spelling form. Pages with multisyllablic words will also have additional links composed of 0’s and a 1’s. The numbers refer to the stress pattern of the words, with 1 being stress and 0 being non-stressed. Each cell is coloured to indicate how many words each cell has. The darkest colour is for high (50+ words), the medium colour is mid (10-49 words), and the light colour is for low (1-9 words). The cells in each row are sorted by the number of words each cell represents, with the greatest on the left and the least on the right.
Links to related pages appear below the page title. Pages are dedicated to words of the same syllable number or group. Each page has the same functionality except for the 1 syllable sight word page which includes several lists of words in the “Calculate” section of the sidebar which can be mapped onto the GPC table.
Clicking on a header word or arrow expands or collapses that sidebar category.
The colours give you a quick view of how many words each category has. Low is for 1-9 words; Mid is for 10-49 words; High is for 50+ words. The numbers in red refer to how many words a particular GPC category contains.
The textbox has 2 functions. 1) Clicking on links in the GPC table will display the associated vocabulary list in this textbox. The total number of words in the box is displayed at the top of the box. 2) Any word or words you paste into the textbox can be “ mapped” onto the GPC table by pasting and then clicking the “Map Words” button under the “Calculate” section. The kinds of things this is useful for include inputting the words of a story to see the kinds of spelling patterns it contains or inputting a list of words from a reading assessment to see which GPCs a child can read. To remove the words that have been “mapped” onto the table click the “Clear” button under the “Calculate” section or press F5, or click the “Reload” button of your web browser.
This sorts the words in the textbox. There are 2 options; to sort alphabetically or to sort by cv pattern.
Clicking this link presents the words in the textbox on a new page which is more suitable for printing.
This controls how many columns your printing page should have.
Clicking this button allows you to “map” any words in the textbox to the GPC table on the right. A word is mapped when it contains a spelling pattern that matches the GPC on the chart. When a word has been “mapped” the cell is highlighted to indicate a hit and the word is added to the cell. For long lists this process may take a while, depending on the speed of your computer.
Clicking this button clears the highlight from the cells and removes the “mapped” words from the cell.
Clicking this button brings up an alert box which states how many cells are visible in the GPC table on the right. If you hide rows or columns in the “Show Rows” section you can count how many cells are visible using this button.
Clicking this button brings up an alert box which states how many cells are highlighted in the GPC table on the right.
Clicking this button removes any highlights from the chart.
If you input a valid GPC code into the textbox and click this button it will highlight the corresponding cell in the chart. A valid GPC code has the format of “phoneme_grapheme” (eg. b_bb,f_ph,k_ck, etc.). Alternately, if you type a letter into the textbox area and click this button all the cells containing the letter in the spelling pattern will be highlighted. For example: if you type a hyphen “-” into the textbox and click the button, all the cells with split digraphs (a-e, i-e, etc.) will get highlighted.
Clicking this button extracts the GPC codes from highlighted cells in the chart and places them into a “Residue” textbox. This allows you to get a list of the unique GPC codes from a list of words. This list of GPC codes can be copied into the textbox and then click Find GPCs to just highlight the cells without the words being inserted into the cells.
By default all the categories are checked and visible in the GPC table. To remove any category from the chart simply uncheck a checkbox. This allows you to create customized views of the chart. Selecting the checkboxes again makes the cells visible again.
This section allows you to highlight cells in the chart based on various pre-selected criteria. Selecting a checkbox highlights the appropriate GPC cell(s) in the GPC table.
These links change the appearance of the chart. “Illiterate view” only works with modern browsers which have implemented css based font downloading (so far only Firefox 3.5+). The PDF icon links to a downloadable pdf file of the displayed chart.