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Moon or Book? Two Sounds of oo is a free printable Grade 2 English worksheet on the long and short sounds of oo, aligned to Common Core standard RF.2.3. It prints 3 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 9 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Moon or Book? Two Sounds of oo

RF.2.3

NameDate

Sort each word into the right column.

1.Sort each word by its pattern: oo (moon) / oo (book).

Sort: moon, book, bloom, school, foot, good

oo (moon)oo (book)
2.Sort each word by its pattern: oo (moon) / oo (book).

Sort: smooth, tooth, book, noon, foot, look

oo (moon)oo (book)
3.Sort each word by its pattern: oo (moon) / oo (book).

Sort: look, soon, noon, hook, brook, spoon

oo (moon)oo (book)

LessonPrint · RF.2.3 · Set 9 · free to copy for classroom use

Answer key — Moon or Book? Two Sounds of oo

Set 9. Prints on its own sheet.

  1. 1.oo (moon): moon, bloom, school; oo (book): book, foot, good
  2. 2.oo (moon): smooth, tooth, noon; oo (book): book, foot, look
  3. 3.oo (moon): soon, noon, spoon; oo (book): look, hook, brook

Last reviewed 2026-09-05. Aligned to RF.2.3 of the Common Core State Standards for English Language Arts.