Websites and Documents
Parenting Counts' website provides photos and information on milestones birth to five-years-old organized by physical, social, learning and communication categories. This link takes you directly to the "Developmental Timeline" section of the website.
From the American Speech-Language-Hearing Association. Provides useful information on language and speech development for children from birth to age five.
Bilingual Language Development:
Article from "Encyclopedia of Language and Literacy Development", a product of the University of Western Ontario (CA).
From the National Association for Language Development in the Curriculum (UK). A basic guide for teachers.