Core vocabulary words (such as "stop," "go," and "more") make up 80% of the words we say. They are great words to focus on learning! You can model them during daily activities (e.g., show your child the picture for "eat" while eating lunch). Here is a list of the 100 most common core vocabulary words:
https://aaclanguagelab.com/materials/100highfrequencycorewords21.pdf
Here is a list of lesson plans for AAC users that focus on teaching core vocabulary. There are several free lesson plans available, with free vocabulary books to use!
Here is a list of ideas on how to incorporate core vocabulary words (such as "up," "down," "more," "help," etc.) into your daily routine and activities.
https://www.aacandautism.com/assets/uploads/Core_Word_of_the_Week.pdf
Here is a online library of hundreds of free adapted books. These are popular children's books (like "If You Give a Mouse a Cookie") with text written in picture icons, to be more accessible to all students.
Signing Savvy is an online video dictionary of words in sign language.
Here is a video of a few words in sign language (more, all done, food, milk, water, sleepy). There are several videos on YouTube of different words in sign language, and you can also look up words on SigningSavvy.com.
Use the words whenever you can throughout the day! (For example, model "go" when playing with cars and making them go)
Here are a few websites/resources with information about different types of augmentative and alternative communication. Please e-mail me with any questions!
The Wings Works YouTube channel has several videos modeling how to use core vocabulary words (such as "turn," "fast," "slow," "feel," "in," "out," "stop," "go," and "help") during daily routines.