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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...

4

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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2 Analytics found

TitleEarly algebra ideas involving one variable, Clip 6 of 11: Trying to complete truth sets for equations two through eight

DescriptionIn the sixth of eleven clips from the first day of the Early Algebra Ideas 6th grade class sessions, the researcher, Robert B. Davis, challenges students to try to find more than one value for each of...

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1 Analytic found

TitleEarly algebra ideas involving one variable, Clip 11 of 11: Are there impossible equations?

DescriptionIn this final clip of the series of eleven from the first day of the Early Algebra Ideas 6th grade class sessions that focus on solving equations with one variable, the students and the researcher are...

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1 Analytic found

TitleEarly algebra ideas involving one variable, Clip 9 of 11: Finding a second secret

DescriptionIn the ninth of eleven clips from the first day of the Early Algebra Ideas 6th grade class sessions, the students continue to work on equations and figure out the general ideas for recognizing values...

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3 Analytics found

TitleEarly algebra ideas involving one variable, Clip 1 of 11: Open sentences that can be made True or False with Legal or Illegal substitutions

DescriptionIn the first of eleven clips from the first day of the Early Algebra Ideas sessions, the researcher, Robert B. Davis, introduces ideas about algebraic equations with one variable and truth sets to a...

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2 Analytics found

TitleEarly algebra ideas involving one variable, Clip 10 of 11: Owning the secrets

DescriptionIn the tenth of eleven clips from the first day of the Early Algebra Ideas 6th grade class sessions, all but three of the students claim to know the general "secrets" for finding values that make a...