WordlyWise 3000 is an American series of workbooks published by Educators Publishing Service for the teaching of spelling and vocabulary. Books A through
LetterWise and WordWise were predictive text entry systems developed by Eatoni Ergonomics (Eatoni) for handheld devices with ambiguous keyboards / keypads
general, predictive text systems are T9, iTap, eZiText, and LetterWise/WordWise. There are many ways to build a device that predicts text, but all predictive