1. 1.1 Variables in Algebra Objectives: 1.) Breaking down pieces of math LANGUAGE 2.) Use “letters” variables effectively 3.) Work with variables in expressions 4.) Start THINKING of expression set ups

2. Let’s choose a variable h = ?f = ? c = 550h + 330f C = 3.99h + 1.07f

3. Why letters!??? http://bleacherreport.com/articles/1776032-star-athletes-making-pouty-faces

4. Vocabulary Variable: A letter that represents unfixed #s Variable expression: A math sentence with variables and #s Example:4x + 6 Evaluate:

5. EXAMPLES 19. Evaluate the expression when 12x when x = 5 23. Evaluate the expression when r(10) when r = 8.2

6. What language is it? a)Die fette Katze geht schnell. b)b)El gato gordo camina rápidamente c)Il gatto grasso cammina velocement. d)Le gros chat marche rapidement. e)O gato gordo anda rapidamente. f) 뚱뚱한 고양이 빠른 안내 German Spanish Italian French Portuguese Korean

7. Symbols/words + - / or ÷ × Symbols English

8. Example 1Example 2Example 3 12 more than a number 75 grouped into how many groups of 5 The difference between the 25 and a number

9. Example 1Example 2Example 3 The student body increased by 12 $75 split amongst 5 people The leftever space on 25 foot wall if a X foot bookshelf takes up space

10. Practice Set Chapter 1.1 Pg. 7 # 1,2; 9-11; 12-14 make up a story; 25-27(odd) 39; 40; WS