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Punctuation & Sentence Building

Level 3 · Learn It

1. Learn It
2. Try It
3. Quiz Me

A complete sentence needs a subject (who or what) and a predicate (what happens).

Start every sentence with a capital letter and end it with . ? or !

Commas separate items in a list: rockets, stars, and moons.

Casey, your friendly science guide
Ready? Let's try one together — I'll explain every answer.