DescriptionIn this clip, Stephanie and Dana continue working on the Towers Problem, introduced in the previous clip in this series. For each tower that they create, Stephanie checks it against the ones they have already created to be sure that it is not a duplicate. Once they have created seventeen towers, they realize that every new tower they build is a duplicate of one that they already have. They tell Amy that they have found seventeen towers and explain that they checked each new tower they built to be sure it is not a duplicate. Amy asks them if there is a way for them to be sure that all their towers are different and that they have not missed any. When Stephanie says that they can compare each tower to every other one, Amy suggests that they double-check that all their towers are unique.
RightsThe video is protected by copyright. It is available for reviewing and use within the Video Mosaic Collaborative (VMC) portal. Please contact the Robert B. Davis Institute for Learning (RBDIL) for further information about the use of this video.
Related Publication Type: Related publication Label: Ed.D. dissertation references the video footage that includes Towers with Stephanie and Dana, Clip 2 of 5: Finding seventeen towers and checking for duplicates Date: 1992 Author: Martino, Amy Marie (Rutgers, the State University of New Jersey)
Name: Elementary students' construction of mathematical knowledge : analysis by profile Reference: QA.M386 1992
Source Title: B50, Towers with Stephanie and Dana (student view), Grade 3, October 11, 1990, raw footage. Identifier: B50-19901011-KNWH-SV-CLASS-GR3-CMB-T4T-RAW