Learning for Justice
Formerly called Teaching Tolerance, Learning for Justice provides free educational resources founded on their Social Justice Standards, which are divided into four domains: Identity, Diversity, Justice and Action. Their website includes free lessons, learning plans, student texts and tasks, teaching strategies, film kits, printable posters, and a learning plan builder.
While created for younger students, these materials are easily adapted for the ABE setting. Free teaching materials can be found in the Classroom Resources section of their website.