OSPI and the University of Denver will share Tier 1 supports from Building Blocks for Belonging (BB4B) to create learning environments where all young children can access the general education curriculum and experience joyful learning. As they define and explore Tier 1 supports, participants will learn to use strategies and tools from across the mixed delivery system and design activities that diversify instruction and environments while addressing learner variability to promote more joyful teaching experiences.