TY - GEN TI - B74,Combinatorics:Towers,work view,Grade 4,February 7,1992,Raw footage DO - https://doi.org/doi:10.7282/t3-7m88-3180 AU - Maher, Carolyn.A PY - 1992-02-07 KW - 3-5 KW - Mathematics education KW - Manipulatives (Education)--Case studies KW - Learning, Psychology of--Case studies KW - Number and operations KW - Reasoning and proof KW - Connections KW - Communication KW - Work view KW - Direct reasoning KW - Guessing and checking KW - Reasoning by cases KW - 4 KW - Towers KW - Combinatorics KW - Unifix cubes KW - Physical models KW - Suburban KW - Public school KW - Informal learning KW - White KW - Female KW - Combinations KW - Sample of human subjects ER -