1. Rational and Irrational Numbers
The Real Number System
Rational and Irrational Numbers

2. Topic I: The Real Number System

3. Writing Variable Expressions
The Real Number System
Writing Variable Expressions
Objective: Interpret parts of an expression, such as terms, factors, and coefficients.
Essential Question: How is an algebraic expression different from a numerical expression?

4. Writing Variable Expressions
The Real Number System
Writing Variable Expressions
Vocabulary
Quantity: Is anything that can be measured or counted. The quantities that change are called variables quantities.
Variable: Is a symbol usually a letter, that represent the value(s) of a variable quantity.
Algebraic expression: A mathematical phrase that include one or more variables.

5. Writing Variable Expressions
The Real Number System
Writing Variable Expressions
Vocabulary
Numerical expression: Is a mathematical phrase involving numbers and operation symbols, but not variables.

6. Writing Variable Expressions
The Real Number System
Writing Variable Expressions
To translate word phrases into algebraic expressions, look for words that describe mathematical operations.

7. Writing Variable Expressions
The Real Number System
Writing Variable Expressions

8. Writing Variable Expressions
The Real Number System
Writing Variable Expressions

9. Writing Variable Expressions
The Real Number System
Writing Variable Expressions

10. Writing Variable Expressions
The Real Number System
Writing Variable Expressions

11. Writing Variable Expressions YOU DO – Independent Practice
The Real Number System
Writing Variable Expressions
YOU DO – Independent Practice
Writing Variable Expressions Worksheet

12. Writing Variable Expressions Complete Writing Variable Expressions
The Real Number System
Writing Variable Expressions
Homework
Complete Writing Variable Expressions
Worksheet

13. Writing Variable Expressions
The Real Number System
Writing Variable Expressions
Closure
Essential Question: How is an algebraic expression different from a numerical expression?