Here are some sites to help you code writing into a linguistic analysis.
Interesting Linguistic Analysis
Make your own tongue twisters!
Interesting blog post. Good resources!
Hunk and Chunk dance by Ginny Dowd. We use this in my classroom, kids love it!
interactive sounds video!
R- Controlled Vowels
The linguistics of languages give you a better idea of what changes need to be made. Here are some great resources on how to better your liguistical assessment of ELL students.