DescriptionThis is the sixth clip in a series of seven of building towers four tall problem using red and blue unifix towers. Another student visited Brian and Jeff’s table and tells them that they got sixteen towers. Brian explained to her that they checked but couldn’t find any duplicates. However, the other students identify a duplicate tower and picks it out. Later the researcher asks them how many towers they have, they are not sure, so Jeff counts on paper to get eighteen. But the researcher asked them to confirm if their physical towers amounted to eighteen. Brian counted sixteen towers.
Local IdentifierB72-19901011-T4T-CLASS-GRD3-CMB-CLIP006-RAW
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