1. Struggling with variables, parameters, and indeterminate objects or how to go insane in mathematics;Bardini,2005
2. Package “lme4”;Bates;Convergence,2015
3. Analyzing and modeling arithmetic errors;Blando;Journal for Research in Mathematics Education,1989
4. Characterizing a classroom practice that promotes algebraic reasoning;Blanton;Journal for Research in Mathematics Education,2005
5. Child-methods in secondary mathematics;Booth;Educational Studies in Mathematics,1981