RUcore: Rutgers University Community Repository
James Finds the Difference Between 1/4 and 1/9
Descriptive
TypeOfResource
Text
TitleInfo
Title
James Finds the Difference Between 1/4 and 1/9
Identifier
(type = doi)
doi:10.7282/T3PC34FQ
Abstract
The class is investigating the difference between 1/4 and 1/9. In initial discussions, some students agree with Meredith, who says that the difference is 1/5 because 9 - 4 = 5. Researcher Maher indicates to the class that if they apply Meredith’s rule to 1/2 and 1/4, they would get an answer of 1/2, challenging their earlier reasoning that produced an answer of 1/4. James offers a model consisting of 3 orange rods and a dark green rod (36 white rods) that can be partitioned into ninths and fourths. He presents the model to Researcher Davis. First, James claims that the difference is 1/5, illustrating this difference by 5 white rods. Researcher Davis responds by asking James to clarify what number name is assigned to one white rod, and then of two white rods. James responds 1/36 and 2/36, respectively. James realizes that if the difference between 1/4 and 1/9 is represented by 5 white rods, then that difference must be 5/36. James then presents this finding to the class.
Genre
(authority = RULIB)
Effective teaching
Genre
(authority = RULIB)
Student engagement
Genre
(authority = RULIB)
Student model building
Genre
(authority = RULIB)
Reasoning
Genre
(authority = RULIB)
Representation
RelatedItem
(type = host)
TitleInfo
Title
RBDIL Analytics
Identifier
(type = local)
rucore00000002136
Name
(id = NAME-1);
(type = personal)
NamePart
(type = family)
Uptegrove
NamePart
(type = given)
Elizabeth
DisplayForm
Elizabeth Uptegrove
Role
RoleTerm
(authority = marcrelator);
(type = text)
Creator
Affiliation
Video Mosaic Collaborative
Name
(id = NAME-2);
(type = personal)
NamePart
(type = family)
Maher
NamePart
(type = given)
Carolyn
DisplayForm
Carolyn Maher
Role
RoleTerm
(authority = marcrelator);
(type = text)
Publisher
Affiliation
Rutgers University
OriginInfo
DateCreated
(qualifier = exact)
2015-12-29T15:20:41-0500
OriginInfo
DateOther
(qualifier = exact);
(type = modified)
2016-01-24T20:08:14-0500
OriginInfo
DateOther
(qualifier = exact);
(type = published)
2016-01-24T20:15:20-0500
Back to the top
Rights
RightsDeclaration
(AUTHORITY = RULIB);
(ID = rulibRdec0007)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
Note
RightsHolder
Name
(TYPE = personal);
(ID = R-NAME_0001)
Elizabeth Uptegrove
Role
Author
ContactInformation
ContactInformationDate
2014-09-04T15:07:19-0500
Back to the top
Technical
ContentModel
Analytic
PreservationLevel
full
Generation
born digital source
MimeType
(TYPE = file)
application/xml
FileSize
(UNIT = bytes)
7135
CreatingApplication
CreatingApplicationName
RUanalytic
CreatingApplicationVersion
2.1
CreatingApplicationDateCreated
2016-01-24T20:15:20-0500
Note
Generated using the RUanalytic tool export function.
Back to the top
Statistical Profile