DescriptionIn this final clip of the series of eleven from the first day of the Early Algebra Ideas 6th grade class sessions that focus on solving equations with one variable, the students and the researcher are revisiting the important ideas, or "secrets", that have helped them to find numbers that will make the equations true. When researcher Robert B. Davis challenges the group to solve the first equation printed below, the students use their "secret ideas", now shared by the class, to immediately find values that work. Milin then poses the second equation below as one that is impossible and the group discuss whether there may be values that are not integers that might work. Jeff then proposes the third equation below as another example of an "impossible equation". Michele I., Jeff, Michael, Stephanie, Brian, Matt and Milin are featured during the activity. Researchers Carolyn Maher, Alice Alston and Amy Martino, along with Marcia O’Brien, district supervisor, and Michael Poe, teacher, are observing.
Equation presented by Dr. Davis:
(□ x □) - (20 x □) + 96 = 0
(□ x □) - (19 x □) + 17= 0
(□ x □) - (17 x □) + 19= 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 11 of 11: Are there impossible equations? 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