Learning to make the R sound is one of the most difficult tasks for students in my Speech Therapy sessions. This video will give you some great pointers on how you could help your children work on this sound outside of our therapy sessions.
Some things to keep in mind while working on the R sound is to practice with your child on the pure "er" sound of R. Don't try to combine it with vowel sounds or extra syllables while first learning the sound. The tongue must be tight, raised upward, and toward the back of the mouth.
Have your child simply listen quietly as you say this list of words slowly and clearly. Don't have your child repeat the words, just listen. I suggest that you read through the following list of words daily as your child listens to your productions of the R sound at the beginning of these words:
raw rat red rain
rake rent rose roof
raft ride ring wreck
rock rust right run
Here are a few books that feature lots of R sounds that you can use for your child to listen to as you read. Later in therapy, these books also serve as a great practice tool for saying the R sound.
Initial R Books:
The Big Red Farm by Cristianne C. Jones
A Rainbow of My Own by Don Freeman
The Little Mouse, the Red, Ripe Strawberry, and the Big Hungry Bear by Don & Audrey Wood
Vocalic R Books:
Aaron's Hair by Robert Munsch
Are You My Mother? by P.D. Eastman
Bear Feels Scared by Karma Wilson