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291
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Student Work
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...
292
Transcript
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...
293
Transcript
Student Work
Analytic icon 1 Analytic found
TitleBuilding large models to show equivalence, an exploration, Clip 3 of 4: Erik justifies a train model for one third
DescriptionIn the third clip David, Meredith, Erik, and Alan worked to build models on the floor using rods. David built a model to test his conjecture, while Erik continued working on the thirty-six centimeter...
294
Transcript
Student Work
Analytic icon 1 Analytic found
TitleContinuing to explore fraction comparisons, Clip 5 of 7: Michael and Brian compare two third and three fourths
DescriptionIn the fifth clip Michael and Brian extended their model using the orange and red train to show thirds and twelfths in addition to fourths. They showed that the difference between two thirds and three...
295
Transcript
TitleA31, Fraction problems, Sharing and number lines (Overhead/Class view), Grade 4, November 1, 1993, raw footage
DescriptionThis raw footage, full-session video, focuses on the overhead for the first 39 minutes and then on the class as they are working on the problems. Dr. Davis introduces Gunnar Gjone as a visiting...
296
Transcript
TitleA29, Fraction problems: Sharing and number lines (Class view), Grade 4, November 1, 1993, raw footage
DescriptionIn this raw footage video that ends midway in the session, Dr. Davis introduces Gunnar Gjone as a visiting mathematics educator from Norway. The researcher, Carolyn Maher, begins the session by asking...
297
Transcript
Analytic icon 2 Analytics found
TitleA30, Fraction problems: Sharing and number lines (Side View), Grade 4, November 1, 1993, raw footage
DescriptionIn this raw footage, full-session video, Dr. Davis first introduces Gunnar Gjone as a visiting mathematics educator from Norway. The researcher, Carolyn Maher, begins the session by asking the...
298
Transcript
Student Work
Analytic icon 1 Analytic found
TitleFraction as number, an introduction, Clip 2 of 8: Students model fraction problems
DescriptionIn the second of eight clips from this session, researcher Carolyn Maher said, “Someone told me that the red rod is half as long as the yellow rod. What do you think?" Danielle responded that the...
299
Transcript
Student Work
Analytic icon 1 Analytic found
TitleFraction as number, an introduction, Clip 6 of 8: Problem posing for the class
DescriptionIn the sixth of eight clips from this session, researcher Carolyn Maher asked the students to work with their partners to come up with questions to challenge the class. Alan was first to present his...
300
Transcript
Student Work
Analytic icon 2 Analytics found
TitleFraction as number, an introduction, Clip 7 of 8: Erik and Alan pose problems as partners
DescriptionIn clip seven, researcher Carolyn Maher told the students to use the remaining class time to challenge their partners with problems using the rods. Erik asked Alan, “If a light green was one third,...