Description
TitleComparing fractions, a whole class debate, Clip 5 of 5: The difference is one sixth
PublisherNew Brunswick, NJ: Robert B. Davis Institute for Learning, , c1993-09-29
DescriptionIn the fifth and final clip from this session, researcher Carolyn Maher asked Jessica to re-explain her original model. Jessica restated her argument, saying that the model showed that one half was larger than one third by the red rod, which was one third. Brian then repeated his counterargument. He said that when one third is split in half, each part becomes one sixth. He showed that the difference could not be one third, since the two thirds were larger than one half by one sixth. Erik then joined the argument. He stated his argument three times in succession, with slight modifications, along with some added commentary by Brian. Michael then joined the discussion. He stated that one half was larger than one third by one sixth and showed this by lining up six red rods above the orange and red train. Brian and Erik agreed with Michael. Meredith showed that one half was not larger than one third by one third, showing that if one third was used to show the difference, it would be one sixth bigger than the length of one half. Erik then repeated his argument that it could not be one third bigger, and that it had to be one sixth.
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.
Date Captured1993-09-29
Local IdentifierA80A81A82-FRC-CMPRF-CLIP005
Related Publication
Type: Related publication
Label: Ed.D. dissertation references the video footage that includes Comparing fractions, a whole class debate, Clip 5 of 5: The difference is one sixth
Date: 2009
Author: Yankelewitz, Dina (Rutgers, the State University of New Jersey)
Name: The development of mathematical reasoning in elementary school students' exploration of fraction ideas
Reference: http://hdl.rutgers.edu/1782.1/rucore10001500001.ETD.000054787
Related Publication
Type: Related publication
Label: Ed.D. dissertation references the video footage that includes Comparing fractions, a whole class debate, Clip 5 of 5: The difference is one sixth
Date: 2001
Author: Steencken, Elena Perrone (Rutgers, the State University of New Jersey)
Name: Tracing the growth in understanding of fraction ideas
Reference: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000055125
Source
Title: A80, Comparing fractions, a whole class debate (classroom view), Grade 4, September 29, 1993, raw footage.
Identifier: A80-19930929-CNCR-CV-CLASS-GR4-FRC-CMPRF-RAW
Source
Title: A81, Comparing fractions, a whole class debate (presentation view), Grade 4, September 29, 1993, raw footage.
Identifier: A81-19930929-CNCR-PV-CLASS-GR4-FRC-CMPRF-RAW
Source
Title: A82, Comparing fractions, a whole class debate (side view), Grade 4, September 29, 1993, raw footage.
Identifier: A82-19930929-CNCR-SIV-CLASS-GR4-FRC-CMPRF-RAW