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1 Analytic found

TitleFraction problems, Sharing and number lines, Clip 2 of 3: That's gorgeous!

DescriptionIn this short clip, James explains to Robert B. Davis his solution to the problem: Which is larger, one fourth or one ninth, and by how much? After some questioning, he explains that the train (i.e.,...

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TitleB63, Madison Project: Robert B. Davis Introducing Integers With Pebbles in the Bag (Presentation & classroom view), Grade 3-5, 1950s_1960s, Clip

DescriptionIn this 8 minutes whole class discussion about early algebra ideas (specifically with regards to integers), Researcher Robert B. Davis models adding positive and negative integers to a class of...

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3 Analytics found

TitleComparing fractions and evaluating models that represent solutions, Clip 5 of 8: Small group work, comparing one half and one fourth

DescriptionIn clip 5, researcher Carolyn Maher then asked the students to compare one half and one quarter and determine the difference between the two. The students worked in their groups to build models that...

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1 Analytic found

TitleComparing fractions and evaluating models that represent solutions, Clip 3 of 8: Sharing Alan's candy bar model

DescriptionIn the third clip Alan presented another model to show the difference between one half and one third. He built a model using one dark green rod, two light green rods, three red rods, and six white...

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TitleComparing fractions and evaluating models that represent solutions, Clip 4 of 8: Comparing one half and one third, different number names for the white rod

DescriptionIn clip 4, researcher Carolyn Maher asked the class to determine the number name for the white rod in the first model that had been built, in which the orange and red train was called one. James,...

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TitleEarly algebra ideas involving two variables, Clip 17 of 18: Presenting ideas About problem 8

DescriptionIn the seventeenth of 18 clips from Early Algebra Ideas Involving Two Variables on the second of two consecutive classroom sessions with the class of 6th grade students, several of the students...

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TitleEarly algebra ideas involving two variables, Clip 18 of 18: Problem 10 and the value of keeping secrets

DescriptionIn the final clip of the series of 18 for Early Algebra Ideas Involving Two Variables with the class of 6th grade students, researcher Robert B. Davis presents the table for problem 10 (see below) as...

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3 Analytics found

TitleEarly algebra ideas involving two variables, Clip 8 of 18: Sharing secrets for tables 2 through 5

DescriptionIn the eighth of 18 clips from Early Algebra Ideas Involving Two Variables on the second of two consecutive classroom sessions with the class of 6th grade students, individual students and pairs of...

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3 Analytics found

TitleEarly algebra ideas involving two variables, Clip 9 of 18: Problem 6 is different?

DescriptionIn the ninth of 18 clips from Early Algebra Ideas Involving Two Variables on the second of two consecutive classroom sessions with the class of 6th grade students, the students note that the Truth...

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3 Analytics found

TitleEarly algebra ideas involving two variables, Clip 11 of 18: Attempts at solving problem 6

DescriptionIn the eleventh of 18 clips from Early Algebra Ideas Involving Two Variables on the second of two consecutive classroom sessions with the class of 6th grade students, several of the students share...