Unit 2; Session 2.3,C: From Personal to Collective Understanding

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last updated by Martina Metz 3 weeks ago
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  • #1779
    Tony Pasternak
    Participant

    Suggest that in the video clip, for the Set B of harder Variations: in the 3rd & 4th problems with missing addends, the missing addends (2 & 4) should be represented by a single underline. Double underlines may present an un-needed distraction.

    #1784
    Martina Metz
    Keymaster

    I can see how they seem a bit odd here; as used in the context of the much larger set introduced in Session 2.4C (“Maintaining the Ravel”), we found that the double lines helped kids attend to place value. Teachers are of course free to adapt, but if they explain the double lines to the kids, they might find them useful.

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