The LEP materials do seem to require quite a high level of profieciency in 
English literacy - you might find the materials on these sites more 
appropriate for parents who are new to English.  They are simple, 
straightforward and should only require minor modifications for a US 
audience.

www.basic-skills-wales.org/bsastrategy/en/early_years/lap_esol.cfm

www.literacytrust.org.uk/talktoyourbaby/quicktips.html

Good luck

K