The style of this board is for students who can read words aloud, but cannot produce (or at least consistently produce) spoken words by themselves. Each square on the board is intended to teach a very common word or portion of a word (there are also some prefixes, like -un, and endings like -ing and -ed). On some there are multiple words listed, all of which sound the same, again supporting the emphasis on the sound of the spoken word. The word sounds can be combined together to create other words. For instance 'all' + 'red' + 'y' can be used to sound out the word 'already', 'may' + 'be' for 'maybe, 'be' + 'cause' for 'because', and 'rest' + 'room' for 'restroom'. The words provided are also higher level, including articles, etc, to allow for the use and modeling of appropriate grammar.
There is also a paper keyboard, for typing, as well as some of the most common letter combinations under the keyboard to speed up typing. I included a graduated board, which has only about 75 of the 99 'buttons' on it, and a simplified keyboard for beginning users. Print page 1 and 3 front and back for advanced users, 2 and 4 front and back for beginners/those who you're worried will be overwhelmed by options. (Frankly, it can overwhelm a teacher trying to figure out where everything is!)
The words are color coded to speed up finding them. Any shade of green is a verb, pink are prepositions, shades of blue are adjectives, suffixes are white, shades of orange are nouns/pronouns, yellow adjectives, and the tan-ish color are articles. (Some words break this rule, I didn't catch everything, but it's approximately all right.)