A key part

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  • Bondstreet

    Senior Member
    English (UK)
    Does "a" mean there are more parts to learning... and this is one of them?

    "the" key part would mean that there is only one key part.
    "a" key part here means that there is at least one other additional key part (spelling patterns):
    "Phonics instruction teaches (1) the connection between word sounds and written letters, and also... (2) spelling patterns...
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