Results

5
Analytic icon 1 Analytic found
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...
6
Analytic icon 3 Analytics found
Date Created1993
DescriptionThis is the fourth in a series of four clips from this session. The researcher, Carolyn Maher, invites the students to take turns placing a number that they have been thinking of onto the big number...
7
Analytic icon 4 Analytics found
DescriptionIn a whole-class discussion in the third of five clips from a single session, students are asked to compare and order 1/2, 1/3, 1/4 and 1/5. David shares his solution that is based on building models...
8
Analytic icon 2 Analytics found
Date Created1993
DescriptionThis is the second in a series of four clips from this session. The students discuss Meredith’s placement of fractions on a number line. Erik conjectures that a person would be confused with all...
9
Analytic icon 1 Analytic found
DescriptionResearcher Amy Martino posed two related tasks to the students that highlighted the difference between additive and multiplicative reasoning. First, she asked the students: If we call the orange...
10
Analytic icon 1 Analytic found
Date Created1993
DescriptionThe students work on the task: If the orange rod is called fifty, what number name would I give the white rod? Sarah and Beth offer an answer immediately, and are questioned by researcher Amy Martino...
11
DescriptionResearcher Carolyn Maher then asked the students to share their solutions as a class and Graham and Michael responded. Graham said the orange and the red would be called one and the dark greens would...
12
DescriptionIn the first clip from this session, researcher Carolyn Maher reminded the students that they had compared the fractional numbers one half and one third. For homework they had written about their...
13
Date Created2014-02-07
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...
14
Analytic icon 2 Analytics found
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...