Directory Results for Building Spelling Skills. "The phonics principles presented in this 36-week course instruct children how to spell words with suffixes '-tion' and '-ion,' silent 'e' words, word endings, spelling the three sounds of 'wh' and 'ch,' conson to Building Spelling Skills. "This 36-week workbook teaches many of the most important root words from foundational languages such as Latin, French, Greek, Spanish, American Indian, and Dutch. The exercises in the workbook include matching word