Use commas in dates and to separate items in a series

Place a comma between day and year (May 15, 2026) and between items in a list of three or more (apples, oranges, and pears). No Oxford-comma debate at G1 — teach the inclusive form.

Mastery threshold

90%

Min instances

Typical minutes

Spaced intervals (days)

1, 3, 7, 14, 30, 60

Prereqs

Choose end punctuation intentionally: period, question mark, exclamation point

Successors

eng.g2.f.gr.commas_addresses_letter_parts
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Common misconceptions

Puts a comma between every two items: 'apples, and, oranges, and, pears.'
Forgets the comma in dates entirely ('May 15 2026').

Exercise pool (4)

Diff	Stem	Type
1	Write today's date: May 15, 2026. Make sure the comma is in the right place.	date write
2	Put commas where they belong: 'I have a dog a cat and a fish.'	list punctuate
2	Write 'I packed ___, ___, and ___ in my backpack.' Fill in three items with commas.	list write
3	Two-item or three-item list? Mark whether each needs commas. Sentence A: 'I see a bird and a bug.' Sentence B: 'I see a bird a bug and a bee.'	two vs three