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Welcome to Algebra

Welcome to Algebra. 9/6/11. Writing Algebraic Expressions From Words. Take a “2.2 Substituting Numbers for Variables” from the back table Study Example 1 and Example 2 (2 mins) Answer 1 – 24 on a separate sheet (13 mins). Announcements. Today is Tuesday: Homework 1.2 – due Tomorrow

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Welcome to Algebra

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  1. Welcome to Algebra 9/6/11 Writing Algebraic Expressions From Words Take a “2.2 Substituting Numbers for Variables” from the back table Study Example 1 and Example 2 (2 mins) Answer 1 – 24 on a separate sheet (13 mins)

  2. Announcements • Today is Tuesday: • Homework 1.2 – due Tomorrow • Quiz 1.2 – Thursday • Grades

  3. Agenda • 7:50 - Warm Up • 8:10 – Announcements • 8:15 – Check Warm Up • 8:20 – Writing Algebraic Expressions From Words • Notes (2.3) – 5 mins • Intro – 5 min • Guided Practice Mult Choice Game – 15 mins • Begin Homework – 10 mins

  4. Cheat Sheet! together add subtract minus, less decreased by combined increased by Left Remains added to total of less than, fewer than difference in all more than plus sum loss Take away divide product of per area out of quotient groups of times average per volume split percent multiply

  5. You already know Numerical Expressions

  6. Algebraic Expressions

  7. + and -

  8. • and ÷

  9. Exponents and Roots

  10. Check For Understanding A • Each person on the team receives a piece of paper that they quickly make into 4cards, labeled A, B, C, and D • I am going to reveal a series of multiple choice questions B • When you have your answer, place it face down on the front, right-hand corner of your desk C D • When time is called you must hold up the card that you chose • Then, we will discuss the choices

  11. Multi-Choice Cards Translate to an algebraic expression: A) 11 more than y B) C) D)

  12. Multi-Choice Cards Translate to an algebraic expression: A) 5 less than n B) C) D)

  13. Multi-Choice Cards Translate to an algebraic expression: A) a number b divided by 8 B) C) D)

  14. Multi-Choice Cards Translate to an algebraic expression: A) the product of 3.3 and a number x B) C) D)

  15. Multi-Choice Cards Translate to an algebraic expression: A) A number x fewer than 7 B) C) D)

  16. Multi-Choice Cards Translate to an algebraic expression: A) A number u cubed B) C) D)

  17. Multi-Choice Cards Translate to an algebraic expression: A) One fourth of a number p B) C) D)

  18. Multi-Choice Cards Translate to an algebraic expression: A) 6 groups of a number d B) C) D)

  19. Multi-Choice Cards Translate to an algebraic expression: A) a number w tripled plus t quadrupled B) C) D)

  20. Multi-Choice Cards Translate to an algebraic expression: A) the product of 2 times a and 5 times b B) C) D)

  21. Multi-Choice Cards Write an algebraic equation to model the relationship: A) The cost of beverages in a vending machine is shown: B) C) c = Cost D) b = Beverage

  22. Multi-Choice Cards Write an algebraic equation to model the relationship: A) Leonardo gets paid to mow his neighbor’s lawn. He begins with $50, and for every week that he mows the lawn, he earns $20. Write a rule as an algebraic equation to model the relationship. B) C) T = Total Money D) W = # of weeks mowed

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