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TitleComparing fractions and evaluating models that represent solutions, Clip 7 of 8: Meredith's challenge, does the model work?
DescriptionIn the seventh clip Amy, Jacquelyn, and James built another rod model at the overhead to show their solution to the problem: Which is larger one half or one quarter. Amy explained that they had tried...
TitleReviewing rod relationships and the candy bar problem, Clip 2 of 6: What is the number name for red when the yellow and light green rod is two? Brian and Jacquelyn
DescriptionIn the second clip from this classroom session, researcher Carolyn Maher posed a challenge. She asked the students to name the red rod if a train of yellow and light green was called two. The...
DescriptionDuring this session, Carolyn Maher asked the students to find the number of one third meter long bows from three, nine, twenty-seven, and eighty-one meters of ribbon. The students worked in partners...
TitleB02, Working with larger ribbons and bows (presentation view), Grade 4, Dec. 14, 1993, raw footage
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...
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...
TitleA96, Building large models to show equivalence, a generalization (student view), Grade 4, Oct. 11, 1993, raw footage
DescriptionDuring this session, conducted as a whole class discussion, Researcher Carolyn Maher revisited the problem that the students had worked on during the previous three sessions: Which is larger, two...
TitleB16, Working without the ribbons and bows: An excursion into division of non-unit fractions (side view), Grade 4, Dec. 15, 1993, raw footage
DescriptionThe session began with a whole class discussion about the problems that the students had worked on the day before. Afterwards, the students worked with their partners on two series of tasks. These...
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...
TitleA93, Building large models to show equivalence, an exploration (side view), Grade 4, October 7, 1993, raw footage
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...