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Division of Fractions, Clip 1 of 3: How Many One Twelfths are in One?
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Division of Fractions, Clip 1 of 3: How Many One Twelfths are in One? [video]. Retrieved from https://doi.org/doi:10.7282/T3K35T8T

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TitleDivision of Fractions, Clip 1 of 3: How Many One Twelfths are in One?
PublisherNew Brunswick, NJ: Robert B. Davis Institute for learning, , c1993-12-02
Persistent URLhttps://doi.org/doi:10.7282/T3K35T8T
DescriptionAmy Martino introduced division of fractions by asking students to describe how many white rods equal an orange and red train. She then asked the students to name the white rod if the orange and red train (i.e., a composite rod made by laying the rods end-to-end) was called one. When the number name for the white rod was established as one twelfth, she asked the students how many one twelfths are in one. The students explained that there are twelve twelfths, or twelve one twelfths, in one.
Math ToolCuisenaire rods
Math StrandFractions
Math ProblemFraction as number, Division of fractions
NCTM Grade Range3-5
NCTM Content StandardNumber and operations
NCTM Process StandardProblem solving, Reasoning and proof, Communication, Connections, Representation
Forms of Reasoning, Strategies and HeuristicsDirect reasoning
Grade Level4
Student ParticipantsBrian F. (Colts Neck, student), Danielle (student), David (student), Erik (student), Graham (student), Jessica (student)
MediatorsMartino, Amy (Researcher), Phillips, Joan (Teacher)
CorporateConover Road (Colts Neck, N.J.)
SettingClassroom
Student GenderMixed
Student EthnicityWhite
Camera ViewsClassroom view, Side view, Presentation view
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 Captured1993-12-02
Local IdentifierA35A36A37-FRC-CMPRF-CLIP001
Related Publication
   Type: Related publication
   Label: Ed. D. dissertation references the video footage that includes Division of Fractions, Clip 1 of 3: How Many One Twelfths are in One?
   Date: 2009-05-01
   Detail: Dissertation available in digital and paper formats in the Rutgers University Libraries dissertation collection.
   Author: Yankelewitz, Dina (Rutgers Graduate School of Education)

   Name: 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 Division of Fractions, Clip 1 of 3: How Many One Twelfths are in One?
   Date: 2002-05-01
   Author: Bulgar, Sylvia
   Name: Through a teacher's lens : children's constructions of division of fractions
   Reference: http://hdl.rutgers.edu/1782.1/rucore10001600001.ETD.000055124
Source
   Title: Introducing Division of Fractions (classroom view), raw footage
   Identifier: A35-19931202-CNCR-FV-CLASS-GR4-FRC-CMPRF-RAW
Source
   Title: Introducing Division of Fractions (side view), raw footage
   Identifier: A36-19931202-CNCR-SV-CLASS-GR4-FRC-CMPRF-RAW
Source
   Title: Introducing Division of Fractions (presentation view), raw footage
   Identifier: A37-19931202-CNCR-PV-CLASS-GR4-FRC-CMPRF-RAW
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