The Make, Take & Teach r-controlled vowel sticks makes for a perfect literacy center activity for practicing this phonics skill. This activity is easily differentiated as you can choose how many r-controlled vowels to write on the sticks. Students simply choose which r-controlled vowel is in the pictured word and then clips a clothespin over the letters. A self-checking features makes the activity ideal for independent practice.
This activity so is easy to make. Come on over to the R-Controlled Vowels blog post to download the pictures needed to create the activity as well as step-by-step directions.