Distinguish the dash (interruption/emphasis) from the colon (set-up-and-deliver) (CCSS L.8.2.a deeper)

Apply the em-dash (—) for interruption or emphasis (parenthetical aside; sharp contrast; sudden amplification) and the colon (:) for set-up-and-deliver (elaboration, definition, list). Use both deliberately in capstone drafting. The dash-colon distinction is a high-mark style move noticed by readers and graders.

Mastery threshold

85%

Min instances

Typical minutes

Spaced intervals (days)

1, 3, 7, 14, 30

Prereqs

Use the comma, dash, and ellipsis to indicate pause or break; use ellipsis for omission in quotation (CCSS L.8.2.a; L.8.2.b)

Successors

Compose a research-driven multi-paragraph capstone (~1500-2000 words) representing K-8 writing culmination (CCSS W.8.1; W.8.2; W.8.3; W.8.4-6; W.8.7-10)

Common misconceptions

Uses the dash where a colon would serve (interrupting where setup-and-deliver was meant).
Confuses em-dash (—) with en-dash (–) and hyphen (-) — three different marks for three different jobs.
Uses paired dashes where parentheses would be less obtrusive (dashes are emphatic; parens are quiet).

Exercise pool (3)

Diff	Stem	Type
2	Choose dash, colon, or neither for each blank. Justify in 1 phrase. (1) 'The capstone has one rule ___ sustain register.' (2) 'The...	dash or colon choice
3	Take a paragraph from your G8-fall synthesis essay. Rewrite using ≥1 em-dash (single or paired) and ≥1 colon. Mark each in margin with rationale.	paragraph punctuation audit
3	Audit your capstone draft for dash and colon use. Count: how many em-dashes? how many colons? Are any used decoratively (without earning...	dash colon in capstone