Results

1
Date Created1990-10-11
DescriptionDuring this session, the students begin by working on the following problem: “Stephen has a white shirt, a blue shirt and a yellow shirt. He has a pair of blue jeans and a pair of white jeans. How...
2
DescriptionIn the seventh clip, Erik and Alan worked to extend their model using the orange and red train to show fourths and halves. They concluded that three fourths was larger than two thirds by one twelfth....
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DescriptionIn the third clip, researcher Amy Martino then worked with Mark and Laura. Mark justified his solution using each model he built. The researcher asked Mark if he thought that a different model might...
4
Analytic icon 1 Analytic found
DescriptionIn the second clip, Kimberly and Audra worked together on the task: Which is larger one half or three fourths. Kimberly built a model using an orange and red train, two dark green rods, and four light...
5
Date Created1990-10-11
DescriptionIn this clip, Stephanie and Dana work on recording their solution to the Towers Problem, introduced in the first clip in this series. As Dana finishes her recording her towers solution individually,...
6
Date Created1990-10-11
DescriptionIn this clip, Jamie and Michael discuss their solutions to the Shirts and Pants Problem introduced in first clip in this series. They compare their individual solutions and find that they match....
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DescriptionIn the third of five clips from this classroom session, David, Erik, and Meredith are building a large model on the floor in an attempt to reconstruct what they had built in a previous session....
8
Analytic icon 2 Analytics found
DescriptionIn the sixth clip Erik and Alan worked on the task: Which is larger, one half or three fourths. Erik showed, using the orange and red train as one, that the difference between the two fractions was...
9
Analytic icon 1 Analytic found
DescriptionIn the fourth of five clips from this classroom session, the researcher, Amy Martino, returned to Alan and questioned him about the third model that he had built for finding the difference between one...
10
Date Created1990-05-01
DescriptionThe fourth of 8 clips with second grade students focuses on Michael and Stephanie, one of several small groups within a whole-class session to solve the spring egg problem. The carton of plastic eggs...