Class Topics: 09.17.14

In Common Core Math Six today, students checked their Evening Practice from Tuesday night with an answer key provided by Mr. Giomini.  Students were reminded about Thursday's quiz that will cover lessons 2.1 - 2.6.

Lesson 2.7: Variables and Algebraic Expressions  was introduced, modeled, and practiced in class. Terms that were introduced today include: variable, constant, algebraic expression, and evaluate. This lesson helps us see we can communicate mathematically with variables in mathematical expressions.

The expression 7d gives the number of days in d weeks. Evaluate 7d for d = 12. How many days 
are in 12 weeks?

Today's Learning Targets: The student will be able to...

• substitute a given value for a variable in an algebraic expression.
• evaluate algebraic expressions.  

For Evening Practice, the student is expected to...

• complete Khan Skills: Least Common Multiple and Greatest Common Factor.

Least common multiple exercise: We're practicing finding the least common multiple in these example exercises. We'll teach you the prime factorization approach which is a pretty nifty way to find the lcm (least common multiple).

  Greatest common factor exercise: Find the biggest number that will divide into the given 2 numbers. This is called the GCF or greatest common factor.No worries, we'll show you how to do it.