1
DescriptionIn the second of five clips from this classroom session, Alan worked alone at his desk on a new task that the researcher, Amy Martino, had posed. He built models to find the difference between one...
2
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...
3
Date Created1990-02-26
DescriptionIn the second of 8 clips with second grade students, researcher Amy Martino interviews Jeff about how he and his group, which had included Stephanie and Brian, approached the candy heart problems in...
4
Date Created1990-02-26
DescriptionIn the third of 8 clips with second grade students, researcher Amy Martino interviews Stephanie about how she and her group, which included Jeff and Brian, had approached the candy hearts problems in...
5
Date Created1990-05-01
DescriptionIn the fifth of 8 clips with second grade students, researcher Amy Martino interviews Stephanie about her solution to the spring egg problem that she had done in class with Michael. (See Clip 4 of...
6
Date Created2014-04-27
DescriptionIn this task-based interview Brandon, a 10-year-old 4th grade boy, shares his ideas with the researcher, Amy Martino, about two problems that he had solved in earlier class sessions. In the first...
7
Date Created2014-04-27
DescriptionIn this task-based interview Brandon, a 10-year-old 4th grade boy, shares his ideas with the researcher, Amy Martino, about two problems that he had solved in earlier class sessions. In the first...
8
Date Created1990-10-11
DescriptionIn this edited clip, Stephanie answers questions from Researcher Amy Martino about her problem solving on the three-tall selecting from two colors towers problem. Stephanie explains how she used her...
9
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....
10
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...
