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Derivational Constancy Stage Feature Q Consonant Changes (Alternations) Sort # 1 Sort # 2 Sort # 3 Sort # 4 /shən/ Base -ct subtract ct + ion subtraction /shən/ Base -t adopt t + ion adoption /shən/ Base -te educate e-drop + ion education /shən/ Base -de explode de-drop + sion explosion Sort # 5 Base -t permit Sort # 6 Base -ce office Sort # 7 Base -ce malice Base -ss express Base -c magic t-drop + ssion permission e-drop + ial official e-drop + ious malicious ss + ion expression c + ian magician ?oddball adaptation Base -se televise e-drop + ion television Base -d suspend d-drop + sion suspension Base -be describe be-drop + ption description Base -t part Base -c public t + ial partial c + ize publicize ?oddballs essential essence Derivational Constancy Stage Feature Q Word Study Sort # 1 (1.1-1.3) Suggested Demonstration: /shən/ Base -ct subtract ct + ion subtraction Base -ss express ss + ion expression Distribute a sheet of the words from the sort to the students. Discuss what they notice about the words and gather their ideas on how the words could be sorted. Students will notice that many of the words end in -ion. Explain that they will be exploring the suffix -ion and what happens when it is added to base words. Then use headers and begin to model the sort. Begin by sorting the base words by final letters (ct and ss). Then match the affixed word to the base. Discuss how the final -ct and the final -ss acquire the sound /sh/ when -ion is added. Make sure that students recognize that the spelling of the base word is not changed when -ion is added to words with final -ct and final -ss. Also explain that -ion means “the act or result” of the meaning of the base word (e.g. the act of subtracting one number from another is subtraction). 1.1 – Easiest word list (Recommended for intermediate) 1.2- Average word list (Recommended for late intermediate) 1.3- Challenge word list (Recommended for advanced intermediate or middle) Key Points: The final /t/ sound from -ct changes to the sound of /sh/. The final /s/ sound from -ss also becomes the /sh/ sound. There is no spelling change when adding -ion to base words that end in -ct or -ss. Link to Assessment: Take Home Word List Word Sorts - Adding – ion to base words, no spelling change. (Feature Q) Sort #1.1 final -ct subtract Derivational Constancy final -ss ct +ion express subtraction connect confession eject confess connection discussion prediction reaction progress eviction select react impress impression progression evict ejection discuss predict selection ss + ion expression Dear Family, Sort Q1.1 Your child is studying the following words as part of a word study program. These words show how to add the suffix -ion to base words ending in the letters -ss or -ct. Please help your child practice the words listed below. confess confession connect connection discuss discussion eject ejection evict eviction impress impression predict prediction progress progression react reaction select selection (Feature Q) Sort #1.2 final -ct subtract Derivational Constancy final -ss ct +ion express subtraction collect detection aggression digress recession restrict collection detect infection possession aggress restriction instruction infect digression compress instruct compression recess possess ss + ion expression Dear Family, Sort Q1.2 Your child is studying the following words as part of a word study program. These words show how to add the suffix -ion to base words ending in the letters -ss or -ct. Please help your child practice the words listed below. aggress aggression collect collection compress compression detect detection digress digression infect infection instruct instruction possess possession recess recession restrict restriction (Feature Q) Sort #1.3 final -ct subtract ss + ion expression projection Derivational Constancy final -ss ct +ion express subtraction profess transaction contradict profession repossession decompress obstruction conviction transact obsess repossess contradiction convict project obstruct digress obsession digression decompression Dear Family, Sort Q1.3 Your child is studying the following words as part of a word study program. These words show how to add the suffix -ion to base words ending in the letters -ss or -ct. Please help your child practice the words listed below. contradict contradiction convict conviction decompress decompression digress digression obsess obsession obstruct obstruction profess profession project projection repossess repossession transact transaction