Do you have students who struggle to pronounce certain sounds by making substitutions? The stopping phonological process is when a child produces a stop consonant /p, b, t, d, k, or g/ in place of a fricative /f, v, th, s, z, sh, ch/ or an affricate sound /j/.
Stopping is considered a normal phonological process that is typically eliminated between of ages of 3-5 years old.
Do you have a student with multiple sound errors? Are you unsure of where to start because there are so many sound errors and you have a difficult time understanding their speech? If you said yes to any of the above your student may be experiencing a phonological processing disorder.
Your student may have more than a simple articulation delay, such as struggling to produce the /r/ or /l/ sound.
They may actually have a phonological disorder which is when a student has not learned the rules for how sounds fit together in order to make words and in turn uses certain processes to simplify words.