Essential Questions 7th 2nd 9wks.

7^th GRADE  ESSENTIAL QUESTIONS 2^ND 9WKS. What properties and conventions do I need to understand in order to simplify and evaluate algebraic expressions?  What strategies are most useful in helping me develop algorithms/procedures for adding, subtracting, multiplying, and dividing positive and negative numbers?Lesson:

• When are negative numbers used and why are they important?

Why is it useful for me to know the absolute value of a number?