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RightStart™ Mathematics by Activities for Learning, Inc.

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dr. cotter

Dr. Cotter on Subtraction Approaches

June 13, 2016 by RightStart™ Math

There are at least eight different ways to subtract multi-digit numbers. Even though a person has learned one method, it is good to explore other methods to enhance understanding. If a child has an accurate and efficient method of subtraction, do … [Read more...] about Dr. Cotter on Subtraction Approaches

Filed Under: 2. Lessons, 4. General Info Tagged With: AL Abacus, dr. cotter, learning differences, RightStart, RightStart Math, RightStart Mathematics, subtraction

Dr. Cotter on What 6 × 3 Means

June 1, 2016 by RightStart™ Math

Sometimes 6 × 3 is thought of as “6 groups of 3.” However, consistency with the other arithmetic operations requires a second look. When adding 6 + 3, we start with 6 and transform it by adding 3. When subtracting 6 – 3, we start with 6 and transform … [Read more...] about Dr. Cotter on What 6 × 3 Means

Filed Under: 2. Lessons, 4. General Info Tagged With: arrays, dr. cotter, homeschool, multiplication, RightStart, RightStart Math, RightStart Mathematics

Dr. Cotter on Long Division

May 20, 2016 by RightStart™ Math

As far as long division is concerned, it no longer has the importance it had in past generations. No one today spends time on their job doing long division. Long division with that guessing component is not used higher mathematics. It is rarely on … [Read more...] about Dr. Cotter on Long Division

Filed Under: 2. Lessons, 3. Struggling Learner Tagged With: dr. cotter, learning challenges, learning differences, learning disabilities, long division, RightStart, RightStart Math, RightStart Mathematics

Dr. Cotter on Multivides

May 20, 2016 by RightStart™ Math

For a child with learning disabilities doing multivides, I suggest this shorter version: Start with any 4-digit number and multiply it by 4, then 5, and 6. Then divide the final product by 4, then 5, and 6. The final quotient must be the same as … [Read more...] about Dr. Cotter on Multivides

Filed Under: 2. Lessons, 3. Struggling Learner Tagged With: division, dr. cotter, learning challenges, learning differences, learning disabilities, multiplication, multitude, RightStart, RightStart Math, RightStart Mathematics, struggling learner

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