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1 Analytic found

TitleBuilding large models to show equivalence, a generalization, Clip 3 of 3: Generating multiple models by doubling

DescriptionIn the third clip researcher Carolyn Maher asked David to share the theory that he had formulated with the class. David, with some assistance from Erik, said that Meredith had originally built a model...

32

4 Analytics found

TitleFraction problems, Sharing and Number Lines, Clip 3 of 5: Comparing unit fractions

DescriptionIn a whole-class discussion in the third of five clips from a single session, students are asked to compare and order 1/2, 1/3, 1/4 and 1/5. David shares his solution that is based on building models...

33

2 Analytics found

TitleReviewing rod relationships and the candy bar problem, Clip 5 of 6: Comparing one half and one third, part 1

DescriptionIn the fifth clip from this classroom session, researcher Carolyn Maher asked the class to compare one half and one third and determine which is larger and by how much. The class worked on this...

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TitleComparing fractions and evaluating models that represent solutions, Clip 4 of 8: Comparing one half and one third, different number names for the white rod

DescriptionIn clip 4, researcher Carolyn Maher asked the class to determine the number name for the white rod in the first model that had been built, in which the orange and red train was called one. James,...

35

2 Analytics found

TitleNumber Line Models and Placing Numbers on the Big Number Line, Clip 1 of 4: Meredith’s Number Line Models

Date Created1993

DescriptionThis is the first in a series of four clips from this session, which begins with the researcher, Carolyn Maher, placing a transparency with Meredith's number line models on the overhead projector. ...

36

1 Analytic found

TitleDivision of Fractions, Clip 1 of 3: How Many One Twelfths are in One?

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...

37

1 Analytic found

TitleDivision of Fractions, Clip 3 of 3: A Whole Class Discussion About Number Sentences

DescriptionAmy Martino leads a whole class discussion during which they talk about ways of writing number sentences for two problems: 1) How many one sixths are in one? and 2) How many one twelfths are in one?...

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TitleThe infinite number line, Clip 2 of 4: Placing integers on the number line

DescriptionIn the second clip researcher Carolyn Maher stated that the class would be studying pieces of the number line. She referred to the homework from the prior session and stated that the class was...

39

TitleBuilding large models to show equivalence, a generalization, Clip 2 of 3: Brian's conjecture

DescriptionIn the second clip, researcher Carolyn Maher asked the students what the model that was next in size would look like. Brian said that it would equal the length of twenty-four white rods. The...

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TitleThe infinite number line, Clip 4 of 4: Placing fractions and mixed numbers on the number line

DescriptionIn the fourth clip researcher Carolyn Maher asked the students to each come up and take a turn placing some fractions on the number line. She called on Gregory to come up first. He placed a one half...