Class Topics: 10.20.11

In EDM today, we continued our work with number properties: commutative, associative, and distributive.  We also worked on examining special cases and creating a general pattern (algebraic expression) using variables.  


Special Case:          General Pattern(Algebraic Expression)
18 * 1 = 18              n * 1 = n
4 + 4 = 2 * 4          d + d = 2 * d
7 * 0.1 = 7/10         s * o.1 = s/10

In Pre-Algebra, we discussed and modeled how to multiply rational numbers.  I believe that multiplying decimals will be a bit more comfortable for the students than multiplying fractions.  

The video below will hopefully help some of us with simplifying our fractions to simplest/lowest terms. These divisibility rules will help us find common factors, or the Greatest Common Factor for both the numerator or denominator.