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B71-Combinatorics-Jeff and Brian-T4T-Work view-Grade3-19901011-Clip 5 of 7-Raw footage
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B71-Combinatorics-Jeff and Brian-T4T-Work view-Grade3-19901011-Clip 5 of 7-Raw footage [video]. Retrieved from https://doi.org/doi:10.7282/t3-8vne-ez96

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TitleB71-Combinatorics-Jeff and Brian-T4T-Work view-Grade3-19901011-Clip 5 of 7-Raw footage
PublisherNew Brunswick, NJ: Robert B. Davis Institute for Learning, 1990-10-11, c1990-10-11
Persistent URLhttps://doi.org/doi:10.7282/t3-8vne-ez96
DescriptionThis is the fifth clip in a series of seven of building towers four tall problem using red and blue unifix towers. Jeff shouts to everyone that they have sixteen towers. Brian keeps checking and makes three additional towers, putting two aside, and adding one tower RRRB after he checks it for duplicates. After Brian had done the checking, they revert to their original solution of seventeen towers. Jeff however is against the idea of changing their solution. It is not clear what each is reporting on their paper. Brian is shading the blue cube representations and Jeff is shading the red cube representations.
Math ToolUnifix cubes
Math StrandCombinatorics
Math ProblemTowers
NCTM Grade Range3-5
NCTM Content StandardNumber and operations
NCTM Process StandardProblem solving, Representation, Reasoning and proof, Communication
Forms of Reasoning, Strategies and HeuristicsGuessing and checking
Grade Level3
Student ParticipantsBrian (Kenilworth, student), Jeff (student)
MediatorsMaher, Carolyn Alexander (Researcher)
CorporateHarding Elementary School (Kenilworth, N.J.)
SettingClassroom
Student GenderMale
Student EthnicityWhite
Camera ViewsWork view
Date Captured1990-10-11
Local IdentifierB71-19901011-T4T-WV-CLASS-GRD3-CMB-CLIP006-RAW
Version 8.5.5
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