13

1 Analytic found

Date Created1993-04-05

DescriptionThis video comes from The Private Universe Project in Mathematics and includes interview with researcher, Carolyn Maher, as well as narrative voice-over, interspersed with footage of a task-based...

14

2 Analytics found

TitleAlan's Infinity

DescriptionIn this clip from 4th grade classroom study, students discuss the placement of numbers between zero and one on a number line. A debate ensues as to how many numbers exist between zero and one. Andrew...

15

2 Analytics found

TitlePUP Math: Gang of four

Date Created2000

DescriptionThis video is part of The Private Universe Project in Mathematics and includes narrative voice-over and interview with researcher, Carolyn Maher interspersed with footage of a group interview with...

16

2 Analytics found

TitleContinuing to explore fraction comparisons, Clip 6 of 7: Erik and Alan compare one half and three fourths

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...

17

1 Analytic found

TitleRevisiting construction of large models to compare fractions, Clip 2 of 5: Alan finds the difference between one half and two fifths

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...

18

1 Analytic found

TitleContinuing to explore fraction comparisons, Clip 7 of 7: Erik and Alan compare two third and three fourths

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....

19

1 Analytic found

TitleRevisiting construction of large models to compare fractions, Clip 4 of 5: Alan reasons about the third model he constructed

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...

20

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...

21

TitleRevisiting construction of large models to compare fractions, Clip 3 of 5: Attempting to reconstruct the big model for comparing two thirds and three fourths

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....

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TitleRevisiting construction of large models to compare fractions, Clip 5 of 5: Finding flaws with the reconstructed big model for comparing two thirds and three fourths

DescriptionIn the fifth of five clips from this classroom session, a visiting researcher asked David, Erik, and Meredith about the large model on the floor, which reflected their attempt to reconstruct the model...