Question

1. the words in this list all include the letter r. circle the words in which the r changes the sound of the vowel in the word.

birthday
frost
first
concrete
orbit
ready
guitar
agree
porch
radio
grade 5, unit 2, we

Explanation:

• birthday: The "ir" makes the vowel sound change.
• first: The "ir" makes the vowel sound change.
• porch: The "or" makes the vowel sound change.

Answer:

birthday, first, porch