DescriptionIn the eighth of eleven clips from the first day of the Early Algebra Ideas 6th grade class sessions, the researcher, Robert B. Davis, challenges the students to find values for the equation printed below. Students suggest a number of the factors of 60. However, when each factor is tested by substituting it into the equation and evaluating the result, none of the factors makes a true statement. Various students suggest that the "secret idea" that they had believed to work for the problems may not, in fact, be valid for all cases. Finally, two values are suggested that do work for the equation. Jeff, Ankur, Milin and Brian are featured during the activity. Researchers Carolyn Maher, Alice Alston, Amy Martino and Tom Purdy, along with Marcia O’Brien, district supervisor, and Michael Poe, teacher, are observing.
Challenge Equation presented to the students:
(□ x □) - (19 x □) + 60 = 0
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 ideas involving one variable, Clip 8 of 11: Losing the "secret" Date: 2009 Author: Spang, Kathleen E. (Rutgers Graduate School of Education)
Name: Teaching algebra ideas to elementary school children : Robert B. Davis' introduction to early algebra Reference: QA.S735 2009
Source Title: A54, Early algebra ideas involving one variable (teacher view), Grade 6, September 30, 1993, raw footage. Identifier: A54-19930930-KNWH-TV-CLASS-GR6-ALG-PIB-RAW