B67-Combinatorics-T4T-Jeff and Brian-Work view-19901011-grd 3,clip 1 of 7-Raw footage

This is the first clip of a series of seven of tower problem focusing on 4-tall tower using unifix cubes of two different colors (red and blue). Researcher Martino began by asking what a tower is and one of the students responds to the question. She then goes ahead to reading out the question as her fellow researchers distribute the problem statement, “Your group has two colors of unifix cubes. Work together and make as many different towers four cube high as is possible when selecting from two colors.” Jeff and Brian are partners. Initially each one is working individually using a “guess and check” strategy to build a random tower and check for possible duplicates. Thereafter a researcher asked the pair if they can work together. They work together by comparing each tower in Jeff’s set to Brian’s set. Jeff told Brian to keep the towers he hands to him that are unique because they are doing this together. Jeff checked each of his towers against Brian’s set one by one. During the check he also would ask if Brian has the color “opposite” of the tower he handed to him. Brian counted 14 and then tried to take some of Jeff’s towers to “put them altogether.” Jeff showed awareness that this one was already checked as a duplicate and disagreed with Brian to put it into their final set.Transcript not available