The TIES Center has a number of resources to help educators and related services personnel work with students with significant cognitive disabilities. Its page called Communicative Supports links to various resources for face-to-face and virtual communication
This site focuses on preschoolers, and its tips on listening to children apply to adults working with older children too. https://www.pre-school.org.uk
Diversity and Communication
This paper for educators identifies important issues in communicating with students from diverse linguistic cultures. https://www.naeyc.org
Paraprofessionals sometimes work with students who have significant or complex communication needs. Some of these students benefit from Augmentative or Alternative Communication (AAC). This video from Cincinnati Children’s Hospital provides an overview of AAC.