Case
Multiplication Dilemma

Mrs. Starks, is a fourth grade teacher that has been teaching fourth grade for several years. She has one particular student that quite does not understand how to multiply a three-digit number by a one digit number. She also has offered small group and one on one help to this student, but he still does not understand the concept of regrouping when multiplying. What are some ways that Mrs. Starks can get her student to understand multiplying a three-digit number by a one digit number?

Posted on: 10/15/14 | Views: 873
Solution #1
Mrs. Starks could use place value models to help the student understand three-digit numbers multiplied by one digit numbers. Using these models will help the student get a better understanding of the regrouping and will help them understand how to multiply the numbers. When using the place value model they can draw groups of the topic factor and then repeat it the number of times that you are multiplying. You can also expand the number and then multiply it to create partial products, then add them together for the answer.

Yes! Love it!!

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Solution #2
Mrs. Starks could use a different strategy other than the standard algorithm. I also teach fourth grade. I teach my students several different strategies. Some of the strategies include break apart, lattice, window, and Japanese. These seem to really help my students. Mrs. Starks could research how to implement these strategies into her classroom and hopefully it would help the student.
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Solution #3
One strategy that you can try is putting a box over the number that he needs to regroup to. Also let the student know that only one digit can fit in the box.

That is a great suggestion. That way she knows the number she is multiplying each time and does not loose track. You can also color coordinate each number so she can see the numbers easier.

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