- early communication skills
- grammar and sentence structure
- working memory
- general interaction
Table 5, which outlines "Typical production milestones for children with Down syndrome" is a great one for anyone who interacts with children with Down syndrome to have. It has definitely come in handy in my clinic.
Here's the link to the site: http://www.down-syndrome.org/information/language/overview/?page=3
Also follow the links to the left for the speech and language overview for children with DS from birth to 16 years. They also give great activities and advice to assist the development of speech and language skills.