Reflection: Adjustments to Practice Integer Product Signs - Using Counters to Discover Signs of Products - Section 1: Introduction

I love this model for showing multiplication of integers.  When I first saw this method my mind was blown.  Not so much the multiplying a positive by a positive or a positive by a negative.  It was multiplying a negative by a negative and a negative by a positive that I thought was cool.

That being said, I'm not convinced this is the most efficient way to teach students about signs of products.  Maybe patterns is a better way.

-3 * 2 = -6

-3 * 1 = -3

-3 * 0 = 0

-3 * -1 = ?

-3 * -2 = ?

Is This the Most Effective Model for Integer Products?
Adjustments to Practice: Is This the Most Effective Model for Integer Products?

Integer Product Signs - Using Counters to Discover Signs of Products

Unit 1: Rational Number Operations
Lesson 12 of 27

Big Idea: Students use integer counters to model products of positive and negative integers.

Print Lesson
12 teachers like this lesson
Standards:
Subject(s):
Math, Number Sense and Operations, multiplication, products, integer products, signs of products, counters, modeling integer products, rational numbers
50 minutes

Grant Harris

Similar Lessons

Multiplying and Dividing Integers
7th Grade Math » Operations with Rational Numbers
Big Idea: More rules?! Yes, multiplication and division have their own set of rules – and can you make a tic tack toe board to help remember them?
Favorites(24)
Resources(17)
Elon, NC
Environment: Suburban

Make One Rummy
8th Grade Math » Solving Linear Equations in One Variable
Big Idea: Step 1 I deal the cards, step 2 I lay down integers pairs that multiply or divide to create the whole number 1, and step 3 I win!
Favorites(1)
Resources(13)
Bowling Green, KY
Environment: Suburban

Multiplying and Dividing Signed Numbers
8th Grade Math » Number Sense
Big Idea: Students revisit multiplying and dividing signed numbers analyzing patters and participating in a Relay Race
Favorites(23)
Resources(19)
Orlando, FL
Environment: Urban