As I begin to prepare for back to school, I am reminded that teaching factors and multiples at the beginning of the year aids in teaching future units. Check Out How I Have Organized My First Unit in 6th Grade Math. Chapter 1: Factors and Multiples In my first chapter, I start by talk to my students about factors and factor pairs.  I show them how to find all the factors of a number by finding factor pairs using a factor rainbow.  This leads to a conversation about prime. composite, and square numbers.  By looking at all the factors of a number, students can identify if that number is prime, composite, square, or a combination of these.  Finally, in chapter 1, I introduce multiples. Chapter 2: Common Factors and Common Multiples In chapter two, I take the students knowledge from factors and multiples, and start discussing common factors and common multiples.  I start with common factors and discuss that the number 1 is ALWAYS a common factor of any......