Lesson 48 • Teacher Instructional Guide • Wheeler's Speller

M Morphological & Phonetic Matrix: Analysis of all 7 base words and their inflected forms.

#	Base Word	With -ed / IPA	With -ing / IPA	Base Pattern	Orthographic & Suffix Rule Notes
1	work	worked /wɜːrkt/	working /ˈwɜːrkɪŋ/	CVCC	Ends in voiceless blend -rk; -ed sounds like /t/. Base remains unchanged.
2	show	showed /ʃoʊd/	showing /ˈʃoʊɪŋ/	CVV (ow)	Vowel team ow says long /oʊ/; -ed sounds like voiced /d/.
3	seem	seemed /siːmd/	seeming /ˈsiːmɪŋ/	CVVC	Digraph ee says long /iː/; nasal m triggers voiced /d/ for -ed.
4	help	helped /hɛlpt/	helping /ˈhɛlpɪŋ/	CVCC	Ends in voiceless stop -lp; -ed sounds like voiceless /t/.
5	thank	thanked /θæŋkt/	thanking /ˈθæŋkɪŋ/	CVCC	Voiceless blend -nk; -ed sounds like voiceless /t/. Digraph th is unvoiced /θ/.
6	join	joined /dʒɔɪnd/	joining /ˈdʒɔɪnɪŋ/	CVVC (oi)	Diphthong oi (/ɔɪ/); voiced nasal n triggers voiced /d/ for -ed.
7	cheer	cheered /tʃɪərd/	cheering /ˈtʃɪərɪŋ/	CVVC (eer)	R-controlled digraph eer; voiced liquid triggers voiced /d/ for -ed.

K Master Answer Key: Complete student table, questions, and sentence solutions.

Exercise 1 Word Building Solutions:
• show: showed showing | • seem: seemed seeming | • help: helped helping
• thank: thanked thanking | • join: joined joining | • cheer: cheered cheering

Exercise 2 Discovery Solutions:
• Question a: Suffixes (or suffix).
• Question b: No (the base word stays exactly the same).
• Question c: /t/ (unvoiced stop /k/ assimilates the suffix sound to /t/).

Exercise 3 Sentence Solutions:
• 1. cheering | 2. helped | 3. joined | 4. thanked

D Decodable Dictation Sentences: Read each sentence clearly, emphasizing suffix pronunciation.

Sentence 1 (worked, showed)

“The boy worked hard and showed us his book.”

Sentence 2 (helped, seemed)

“She helped her friend and seemed very glad.”

Sentence 3 (cheered, joined)

“The children cheered as they joined the game.”

Sentence 4 (thanked, working)

“We thanked the teacher for working with us.”