According to the rule discussed, what is the key factor that determines whether a word ending with the /ch/ sound is spelled with 'ch' or 'tch'?

The sound that comes directly before the /ch/ sound. If it's a short vowel sound, use 'tch'; otherwise, use 'ch'.

Explain why the word "march" ends with 'ch' and not 'tch'.

"March" ends with 'ch' because the sound immediately before the /ch/ sound is /r/, which is not a short vowel sound.

Name: Spelling Digraphs sh, ch, th, wh
Author: Insta~Lesson

8th Grade · ELA · 45 min

I can correctly spell words containing sh, ch, th, and wh digraphs.

1
Words that end with the /ch/ sound can be spelled with either ch or tch, depending on the sound that comes directly before it.
2
If there is a short vowel sound directly before the /ch/ sound, the word is spelled with tch.
3
If the sound before the /ch/ is not a short vowel, such as a long vowel or a consonant, the word is spelled with ch.

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