Science, technology, engineering and math (STEM) professionals, educators and researchers seek to broaden participation in STEM fields by underrepresented groups, including African Americans. A deeper understanding of the bond be- tween STEM learning and STEM identities can help broaden participation in STEM fields. One line of inquiry developed and deployed a toolkit to analyze social media content for STEM identities in African American STEM communities of practice. In another line of inquiry, families whose children had asthma used data science to analyze information from residential indoor air quality sensors to identify asthma triggers.