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    Use connecting cubes!
    By hngsmom

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    Does your cooperating teacher have any connecting cubes (multi-link cubes) to use as a manipulative? Its a great way to show kids what the whole regrouping thing means. For example, build 90 (9 groups of ten) and then take away 42. The students will have to "break a ten" to get the 2 ones that they need to remove. Having a concrete example has really helped my students see the whole regrouping process. I also teach them to remember BBBB--bigger bottom (number), better borrow (from the tens). Its so hard to put this into words--if you could come to my classroom, it would be so much simpler! Good Luck!

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