TY - GEN TI - Towers five-high selecting from two colors: Developing local organization DO - https://doi.org/doi:10.7282/T3FT8JFW AU - Alston, Alice S. PY - 1992-02-06 KW - Sample of human subjects KW - Mathematics education KW - Learning, Psychology of--Case studies KW - Problem solving KW - Reasoning and proof KW - Communication KW - Connections KW - Representation KW - Classroom KW - Mixed KW - White KW - Student view KW - Guessing and checking KW - Manipulatives (Education)--Case studies KW - Critical thinking in children--New Jersey--Case studies KW - 4 KW - Algebra KW - 3-5 KW - Counting KW - Combinatorics KW - Towers KW - Unifix cubes KW - Physical models KW - Combinations ER -