How does my child know whether to write ou or ow?

Both can spell the sound in cow and house, so children need to learn the words. Ow often comes at the end of a word, like cow, or before n or l, like clown and towel. The ou or ow page practices this choice with eight picture words.

Why does oo have two sounds?

Oo can say the long sound in moon and the short sound in book. The oo sort has children say ten picture names, like broom, foot and cookie, and write each under moon or book.

Is there an answer key for each worksheet?

Yes. All eight diphthong sheets have an answer key, including both pages of the review.

What phonics skills are taught in first grade?

First graders learn long vowel patterns (CVCe like 'make'), common vowel teams (ai, ea, oa), consonant digraphs (sh, ch, th, wh), and r-controlled vowels (ar, or, er). Per CCSS RF.1.3, they should decode regularly spelled one-syllable words and read words with inflectional endings.

How many sight words should a first grader know?

Most first grade programs expect students to read 100-200 high-frequency sight words by year end. These include common words that do not follow standard phonics rules (the, was, said, could). Daily practice with sight word worksheets and reading builds automatic recognition.

1st Grade Diphthongs Worksheets

Ages 6-7 · Free previews · Print-ready PDFs

Written by Adi Ackerman, Head Teacher

Free printable diphthongs worksheets for 1st grade students (Ages 6-7). Aligned to Common Core standards. Ready to print.

1st Grade Reading Phonics Diphthongs Clear All

Aw and Au Picture Words, Trace and Write

Grade1st Grade

TopicPhonics

Diphthong Sentences, Read and Circle

Grade1st Grade

TopicPhonics

Diphthongs

GradeGrades 2 & 1

TopicPhonics

Oi and Oy Picture Words, Trace and Write

Grade1st Grade

TopicPhonics

Oi or Oy Sort

Grade1st Grade

TopicPhonics

Ou and Ow Picture Words, Trace and Write

Grade1st Grade

TopicPhonics

Ou or Ow, Pick the Spelling

Grade1st Grade

TopicPhonics

Ou, Ow, Oi, Oy and Aw Review

Grade1st Grade

TopicPhonics

The Two Sounds of Oo

Grade1st Grade

TopicPhonics

More phonics worksheets

Explore all of our 1st grade phonics worksheets, covering phoneme isolation, phoneme segmentation, blending sounds, blending phonemes, and more.

Phoneme isolation Phoneme segmentation Blending sounds Blending phonemes Phoneme substitution Phoneme differences Phonemic similarities Rhyming CVC & CVCe Words Short and long vowels Identify digraphs Digraph sounds Word families Syllables CVC words Silent e words Vowel teams Constructing words R-controlled vowels

Frequently Asked Questions

A diphthong is a vowel sound that slides from one sound to another as you say it, like ou in out or oy in boy. The set also covers aw and au, as in saw, and the two sounds of oo, as in moon and book.

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1st Grade Diphthongs Worksheets

More phonics worksheets

Frequently Asked Questions

What is a diphthong?

How does my child know whether to write ou or ow?

Why does oo have two sounds?

Is there an answer key for each worksheet?

What phonics skills are taught in first grade?

How many sight words should a first grader know?

What is ClassWeekly?