AN 1.2 number lines: one for CW, one for HW

Quick Start Expectations 1.Come in and sit quietly. 2.Fill in planner and HWRS: 3.Work on Warm-up : AN p # 9-15, DateTransactionBalance January 1 $ January 5 Writes a check for $30.00 January 12 Writes a check for $ January 15 Deposits $ January 17 Writes a check for $85.12 January 21 Withdraws $ What was Kenji’s balance at the end of January? When was his balance the greatest? When was his balance the least? At the start of January, Kenji had a balance of $ in his checking account.

DateTransactionBalance January 1 $ January 5 Writes a check for $30.00 − January 12 Writes a check for $ − January 15 Deposits $ January 17 Writes a check for $85.12 − January 21 Withdraws $ − At the start of January, Kenji had a balance of $ in his checking account. What was Kenji’s balance at the end of January? When was his balance the greatest? When was his balance the least? $ Jan. 15 Jan. 12 Warm-up Answers:

Notebook: 10/8/14 AN 1.2: Extending the Number Line How can you use a number line to compare two numbers? (Underline 2 or 3 key words in your question.) Vocabulary: opposites rational numbers negative numbers positive numbers

Rational numbers are numbers that can be expressed as one integer a divided by another integer b, where b is not zero. You can write a rational number in the form or in a decimal form. For a rational number,, why does b have to be nonzero? Are integers rational numbers? Explain. Is zero a rational number? Explain

Each negative number can be paired with a positive number. These two numbers are called opposites because they are the same distance from zero on the number line, but in different directions. On this number line where are positive and negative numbers located in relation to 0?

* What would happen to the values of the numbers if we continue the shown number line to the left? * Which number is less, – 999 or – 1,000?

p. 12 ABCDE number opposite A B C E D

Number lines can be horizontal or vertical.

0⁰ 115⁰ 113.2⁰ 40⁰ -15⁰ -32.5⁰ -32.7⁰

students may graph on either horizontal or vertical number lines

x ≤ 1 x < 3 x > -5

Homework: AN p # 9-15, 21-35