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Articulation Developmental Norms Chart

Check out this free speech therapy chart for prevocalic and vocalic r.

AGE OF TYPICAL ACQUISITIONCONSONANT SOUNDSEXAMPLE
Age 5prevocalic or consonantal /r/red
6-7 yearsvocalic /r/

Ernie

 Orville

8 years

pr

br

tr

dr

kr

 gr

 fr

prize

 braid

 truck

 dry

creep

great

fry

9 years

thr

spr

str

 skr

thread

 spread

string

scrape

 

 

 

 

SOUND

EXPECTED AGE OF MASTERY

COMMON ERROR

prevocalic /r/

5 years

gliding w/r

wed for red

prevocalic /r/

not developmental

substitution of v for /r/

ved for red

vocalic /r/

5 years

vowelization

ca for car

initial /r/ blends

8 & 9 years

cluster reduction ti for tree

Gliding:  Bw for bread