DENTIFYING AND STUDYING BLACK HOLES OF MATHEMATICS EDUCATION RESEARCH ON INSTRUCTIONAL PRACTICE. - Mainzer, Emily A.; MacDonald, Beth L.; Matney, Gabriel; Cavanna, Jillian M.; Jackson, Brent E.; Matranga, Anthony; Pak, Byungeun; Silverman, Jason; Tanck, Hilary (Conference Papers -- Psychology of Mathematics & Education of North America, 2024)