# Factoring Quadratics Using Lattice Multiplication

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## How To Factor Quadratics Using Lattice Multiplication: A Mini-Course

This course is specifically designed to help current teachers become accustomed to and use the new strategies of current elementary students in order to teach factoring quadratics. So often, students have struggled to "guess and check" the factors of the c term that add up to the b term. This strategy helps structure the student's thinking and uses a strategy that they are now using in order to solve two digit multiplication. Therefore, teachers will be introduced to this new method, called lattice multiplication, and how to use what the students are already comfortable with in order to factor different types of quadratics.

## Unit #1: What is Lattice Multiplication?

At the end of this unit, learners will be able to accurately use the lattice multiplication process in order to multiply two two-digit numbers.

## Unit #2: Polynomials in ax2 + bx + c form where a = 1

At the end of this unit, learners will be able to use lattice multiplication in order to factor polynomials in ax2 + bx + c form where a = 1.

## Unit #3: Polynomials in ax2 + bx + c form where a > 1

At the end of this unit, learners will be able to use lattice multiplication to factor polynomials in ax2 + bx + c form where a > 1.

## Unit #4: Difference of Perfect Squares

After completing this unit, learners will be able to factor the difference of perfect squares using lattice multiplication.