Early algebra, investigating linear functions, series 2 of 7, working on Guess My Rule problems 1-3, Clip 3 of 5: Yonny and Brandon working on problem 3 [video]. Retrieved from https://doi.org/doi:10.7282/T3JH3J57
DescriptionIn the third of five clips in Series Two of Exploring Linear Functions, researcher Arthur Powell asks 7th graders,Yonny and Brandon, to continue their Guess My Rule exploration with problem 3. Noticing that the pattern of differences for the Y value is three, the boys quickly articulate the pattern as their rule and determine values up to ten. When asked to find the value of Y when X is twenty, Brandon predicts that Y will be fifty-one based on his strategy from problem 2 of doubling ten and adding thirty-one for the Y value of ten. Yonny disagrees, predicting that the value would be sixty-one. When asked to explain why, Yonny notes that the differences for Y are increasing by three so the value of ten should be tripled before adding the thirty-one. Researcher Powell asks the boys to complete the table for twenty in order to decide. They do this and find that Yonny's prediction was correct. Researcher Powell concludes the day's session. Teacher Alan Hiba is observing.
Guess My Rule Problem 3.
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 Early algebra, investigating linear functions, series 2 of 7, working on Guess My Rule problems 1-3, Clip 3 of 5: Yonny and Brandon working on problem 3 Date: 2009 Author: Baldev, Prashant V. (Rutgers, the State University of New Jersey)
Name: Urban, seventh-grade students building early algegra ideas in an informal after school program Reference: QA.B175 2009
Source Title: B26, Early algebra, investigating linear functions, Guess My Rule introduction (student view), Grade 7, November 2, 2005, raw footage. Identifier: B26-20051102-PFLD-SV-IFML-GR7-ALG-VAR-RAW