Edutopia is a good website for teacher. It provides a lot of resources in different topic related to education. Diversity is one of the hot topic. With the tag ‘diversity’ , ‘Culturally Responsive Teaching’ or other related words. You can find different resources to help build an inclusive school community for students from different cultural, socioeconomic, and linguistic backgrounds and for children with unique instructional needs.
The above link is one of the article in the series ‘diversity’. It provides a lot of different information and resources. For example, Some Awareness Activities for introducing diversity at the beginning of the school year, some lesson plan for multiculturalism to help educators engage students and families from diverse backgrounds.
It is a really good websites i recommend you. All of the information are useful and you can have a look as a reference.