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TitleEarly algebra ideas about binomial expansion, Stephanie's interview three of seven, Clip 1 of 7: Revisiting earlier ideas about the square of the quantity (a + b)
DescriptionIn the first clip in a series of seven from the third of seven interviews in which 8th grader Stephanie explores Early Algebraic Ideas about Binomial Expansion, Stephanie arrives with several pages of...
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Analytic icon 1 Analytic found
TitleFractions, Grade 4, Clip 2 of 4: Additive vs. multiplicative reasoning
DescriptionResearcher Amy Martino posed two related tasks to the students that highlighted the difference between additive and multiplicative reasoning. First, she asked the students: If we call the orange...
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Analytic icon 1 Analytic found
TitleFractions, Grade 4, Clip 4 of 4: Designing a new rod set
DescriptionResearcher Amy Martino posed two related tasks to the students. In this clip, the students work on designing a rod that can be called one half when the blue rod is called one. Erik and Alan discuss...
14
Analytic icon 1 Analytic found
TitleIntroducing Fraction Equivalence and an Exploration of Fraction Comparison, Clip 2 of 4: An introduction to proportional reasoning.
Date Created1993
DescriptionResearcher Amy Martino asked the students to assign a number name to the white rod when the orange rod was called ten. After discussing the problem with their partners, the students joined in a whole...
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TitleIntroducing Fraction Equivalence and an Exploration of Fraction Comparison, Clip 1 of 4: Equivalent fractions, a debate
Date Created1993
DescriptionIn this clip, researcher Amy Martino leads a class discussion that centers on the task: If I call the orange rod one, what number name would I give two whites? Some students suggest the number name...
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Analytic icon 3 Analytics found
TitleA73, Revisiting construction of large models to compare fractions (classroom view), Grade 4, October 8, 1993, raw footage
DescriptionAmy Martino began the session by asking the students to discuss the task that they had worked on during the previous two sessions: Which is larger, two thirds or three fourths, and by how much?...
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TitleA96, Building large models to show equivalence, a generalization (side view), Grade 4, October 11, 1993, raw footage
Date Created1993-10-11
DescriptionDuring this session, conducted as a whole class discussion, Researcher Maher revisited the problem that the students had worked on during the previous three sessions: Which is larger, two thirds or...
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TitleA94, Building large models to show equivalence, a generalization (classroom view), Grade 4, October 11, 1993, raw footage
Date Created1993-10-11
DescriptionDuring this session, conducted as a whole class discussion, Researcher Maher revisited the problem that the students had worked on during the previous three sessions: Which is larger, two thirds or...
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TitleA95, Building large models to show equivalence, a generalization (presentation view), Grade 4, October 11, 1993, raw footage
Date Created1993-10-11
DescriptionDuring this session, conducted as a whole class discussion, Researcher Maher revisited the problem that the students had worked on during the previous three sessions: Which is larger, two thirds or...
20
Analytic icon 1 Analytic found
TitleA87, Discovering equivalent fractions and introducing fraction notation (presentation view), Grade 4, October 4, 1993, raw footage
Date Created2015-12-09
DescriptionResearcher Maher began the session by discussing the relative size of fractions within different models. Using the analogy of two different sized dioramas of children in a fishing boat, the class...