As SLC was being designed and co-created with teachers, BTCEA organized the growing number of Action Packs into the five key Modules (see above). More recently, to provide teachers and students with diverse ways to use SLC, we have created Units that draw on Action Packs from across the Modules that focus on a specific topic or area for exploration. There are four Units: Climate & Connection, Climate Action, Green Careers, and Community Health. For teachers looking to deeply engage their students in a complex topic such as climate change or community health, the Units offer the perfect structured yet flexible approach.