This week we are going to be building fluency with multiplication of rational numbers. Number lines are used here so students can build on their prior knowledge of representing opposites, addition, and subtraction on the number line. By representing multiplication on the number line, students will see the sign rules for multiplication as a logical extension of this prior knowledge. This work develops students' understanding that they can represent multiplication with negative numbers on the number line and that there are patterns or "sign rules" for multiplying with negative numbers. We will then move on to division of rational numbers. Number lines are used here so students can build on their prior knowledge of representing multiplication on the number line. By representing division on the number line, students will see the sign rules for division as a logical extension of this prior knowledge. This work develops students' understanding that they can represent division with negative numbers on the number line and that there are patterns or "sign rules" for dividing with negative numbers.
We will be reviewing on Thursday for our Unit 1 Exam on Integers and Rational Numbers, which will be on Friday. Comments are closed.
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AuthorI have been teaching 7th grade Mathematics for 10 years. I have worked at two IB MYP schools, one in Houston, Texas, and at West End Middle for 8 years. Please feel free to email me if you have any questions, comments or concerns. Archives
August 2018
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