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Discovering equivalent fractions and introducing fraction notation, Clip 3 of 5: Alan and Erik compare one half and two thirds [video]. Retrieved from
https://doi.org/doi:10.7282/T34Q7SKC
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Description
TitleDiscovering equivalent fractions and introducing fraction notation, Clip 3 of 5: Alan and Erik compare one half and two thirds
PublisherNew Brunswick, NJ: Robert B. Davis Institute for Learning, , c1993-10-04
DescriptionIn the third clip, Alan and Erik worked together on the task: Which is larger two thirds or one half and by how much? Alan first built a model using the dark green rod as one, and the two concluded that one half is bigger than one third by one sixth. Alan then built a model using the orange and red train and showed, using direct reasoning, that the difference between the two purple and dark green rods was a red rod, or one sixth. Later, Erik and Alan explained their solution to researcher Carolyn Maher and justified it that one half was bigger than one third but smaller than two thirds and that the difference between one half and two thirds was one sixth just as one half and two thirds would also be different by 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 Captured1993-10-04
Local IdentifierA86A87A88-FRC-CMPRF-CLIP003
Related Publication
Type: Related publication
Label: Ed.D. dissertation references the video footage that includes Discovering equivalent fractions and introducing fraction notation, Clip 3 of 5: Alan and Erik compare one half and two thirds
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 Discovering equivalent fractions and introducing fraction notation, Clip 3 of 5: Alan and Erik compare one half and two thirds
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: A86, Discovering equivalent fractions and introducing fraction notation (classroom view), Grade 4, October 4, 1993, raw footage.
Identifier: A86-19931004-CNCR-CV-CLASS-GR4-FRC-CMPRF-RAW
Source
Title: A87, Discovering equivalent fractions and introducing fraction notation (presentation view), Grade 4, October 4, 1993, raw footage.
Identifier: A87-19931004-CNCR-PV-CLASS-GR4-FRC-CMPRF-RAW
Source
Title: A88, Discovering equivalent fractions and introducing fraction notation (side view), Grade 4, October 4, 1993, raw footage.
Identifier: A88-19931004-CNCR-SIV-CLASS-GR4-FRC-CMPRF-RAW