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TitleA92, Building large models to show equivalence, an exploration (classroom view), Grade 4, October 7, 1993, raw footage

Date Created1993-10-07

DescriptionResearcher Maher began the session by discussing the ideas that the students had worked on during the previous session. Then, the students worked in groups and revisited the task: Which is larger, one...

19

TitleDiscovering equivalent fractions and introducing fraction notation, Clip 4 of 5: Danielle and Gregory compare one half and two thirds

DescriptionIn the fourth clip, researcher Alice Alston worked with Gregory and Danielle on the task: Which is larger two thirds or one half and by how much? Danielle built two models, one using the dark green...

20

1 Analytic found

TitleFractions, Grade 4, Clip 3 of 4: Multiple models to represent one half

DescriptionResearcher Amy Martino led a whole class discussion that focused on solutions to the task: I'm going to call the orange and light green together one…Can you find a rod that has the number name one...

21

TitleDiscovering equivalent fractions and introducing fraction notation, Clip 3 of 5: Alan and Erik compare one half and two thirds

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...

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TitleDiscovering equivalent fractions and introducing fraction notation, Clip 1 of 5: Boats and fish, a conversation about building models

DescriptionIn the first clip, researcher Carolyn Maher began the session with a discussion about a model that Mark had made for another class. The model was comprised of a boat, a fish, and two children. The...

23

1 Analytic found

TitleFraction as number, an introduction, Clip 4 of 8: Establishing a unit for comparing length of rods

DescriptionIn the fourth of eight clips from this session, researcher Carolyn Maher mentioned that she had heard a student suggest that the red rod be called one if the dark green rod were called one. She asked...

24

1 Analytic found

TitleIntroducing fraction equivalence and an exploration of fraction comparison, Clip 4 of 4: Finding the number name for the difference between one half and one third

Date Created1993

DescriptionDuring this small group activity, the students revisited the task: Which is larger, 1/2 or 1/3, and by how much? Some of the students attempted to solve the task using balance beams, but most reverted...

25

TitleFraction problems, Sharing and Number Lines, Clip 1 of 5: Which is more, 1/4th or 1/9th of a candy bar? How much more?

DescriptionIn this clip, the first of five clips from a single class session, the researcher asks the students to review how they were able to show that 1/4 is larger than 1/9 by 5/36. The students had worked...

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TitleBuilding large models to show equivalence, an exploration, Clip 4 of 4: Testing the doubling conjecture

DescriptionIn the fourth clip Erik repeated the explanation of his model to the classroom teacher. His model consisted of a train of three orange and one dark green rod and lined up four blue rods. He lined up...

27

4 Analytics found

TitleB41, The Gang of Four (Jeff and Stephanie view), Grade 4, March 10, 1992, raw footage

Date Created2014-04-26

DescriptionThe small group interview with 4 students (Jeff, Michelle, Milin, and Stephanie) lasted about an hour and occurred after the students worked in the classroom on building towers of height five...