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171
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Analytic icon 1 Analytic found
TitleBuilding large models to show equivalence, a generalization, Clip 3 of 3: Generating multiple models by doubling
DescriptionIn the third clip researcher Carolyn Maher asked David to share the theory that he had formulated with the class. David, with some assistance from Erik, said that Meredith had originally built a model...
172
Transcript
TitleThe infinite number line, Clip 1 of 4: Naming points on the number line
DescriptionResearcher Carolyn Maher began the session in clip 1 by stating that the class was discussing rulers at the end of the prior session. The researcher pointed out that rulers may be constructed...
173
Transcript
TitleBuilding large models to show equivalence, a generalization, Clip 2 of 3: Brian's conjecture
DescriptionIn the second clip, researcher Carolyn Maher asked the students what the model that was next in size would look like. Brian said that it would equal the length of twenty-four white rods. The...
174
Transcript
TitleThe number line and equivalent fractions, Clip 1 of 1: Multiple representations for equivalent fractions
DescriptionIn this clip researcher Carolyn Maher asked Graham what his argument would be for why two fourths could be labeled one half. He replied that one half plus one half would equal a whole and that two...
175
Transcript
TitleThe infinite number line, Clip 2 of 4: Placing integers on the number line
DescriptionIn the second clip researcher Carolyn Maher stated that the class would be studying pieces of the number line. She referred to the homework from the prior session and stated that the class was...
176
Transcript
TitleThe infinite number line, Clip 4 of 4: Placing fractions and mixed numbers on the number line
DescriptionIn the fourth clip researcher Carolyn Maher asked the students to each come up and take a turn placing some fractions on the number line. She called on Gregory to come up first. He placed a one half...
177
Transcript
Analytic icon 1 Analytic found
TitleThe infinite number line, Clip 3 of 4: How many numbers between 0 and 1?
DescriptionIn the third clip researcher Carolyn Maher stated that similarly to the number line going on and on forever, so does the numbers in between zero and one. The students then explored dividing the line...
178
Transcript
TitleWord problems with addition and subtraction, Jeff's group, Clip 3 of 3: Problems 4, 5 and 6, finding the resulting amount from one number and the difference
Date Created1989-03-21
DescriptionIn the last of three clips in a first grade classroom, Jeff, Milin and Jamie begin by reading problem 4. Jeff, without referring to the stones or cubes, immediately states that Grandpa would have six...
179
Transcript
TitleWord problems with addition and subtraction, Jeff's group, Clip 1 of 3: Introduction and problem 1, how many more legos does David have than John?
Date Created1989-03-21
DescriptionIn the first of three clips in a first grade classroom, teacher Angela Marinaro introduces the day's activity and distributes a packet of problems to each child. She first asks the students to...
180
Transcript
TitleWord problems with addition and subtraction, Stephanie's group, Clip 1 of 9: Problem 1, how many more legos does David have than John?
Date Created1989-03-21
DescriptionIn the first of nine clips in a first grade classroom, Teacher Angela Marinaro introduces the day's activity and distributes a packet of problems to each child. She asks the students to identify the...