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Chapter 8: Variables and Equations

Chapter 8: Variables and Equations. Math Grade 7. Thursday January 23 rd. Mental math (2min) Review (vocabulary). Key Words In this equation: 3x 2 + 2x + 3 + x, what are: . Algebraic expression: Set of letters and numbers which are interconnected by sign Variable(s):

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Chapter 8: Variables and Equations

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  1. Chapter 8: Variables and Equations Math Grade 7

  2. ThursdayJanuary 23rd • Mental math (2min) • Review (vocabulary)

  3. Key WordsIn this equation: 3x2 + 2x + 3 + x, what are: • Algebraic expression: • Set of letters and numbers which are interconnected by sign • Variable(s): • Letters that replace numbers • Term(s): • Each term is separated by the plus sign (+) or minus (-). • Like terms: • Terms whose variables are the same • Constant(s): • Single number • Coefficient(s): • Number stuck beside a letter • Exponent(s): • The number of times a number is to be multiplied by itself

  4. Variables and Equations • Correct homework • p. 233 #26-49 • p.234 #10-27 • p. 235 #1-21 • 8.5 Using Equations to solve Problems • Homework: p.239 #1-39 (only odd #)

  5. Friday: Problem SolvingJanuary 24th • Textbook p. 247 #1, 4, 8 et 11 • Extension: Our school went whale watching. The cost was $8 per student and $10 per adult. The total cost for the whale-watching trip was $518 for 63 tickets. How many students went whale watching? How many adults?

  6. Tuesday, 4th FebruaryVariables and Equations • Correct homework • 8.5 Using Equations to solve Problems • 2x + 3y – ( 4xy2 - 5y) +10 + 4 – (7x2y + y2x) • Reduce the equation • Find the perimeter of both figures: • Practice/Homework: p.239 #1-39 (only odd #) 13s +3 4t -5 10t +1 7s -2

  7. Thursday, February 6thUsing Equations to solve Problems • Correction Homework : p.239 #1-39 (only odd #) • p. 240-241 (together) • Homework: Review p.244-p.245 (odd number only) • Algebra Exam Tuesday

  8. Review/Problem Solving • Questions homework??? Review??? • -(3xy + 3 – 5yx) + 6y – 4xy3 – 3y3 + 7x3y - 1 • p.247 #2, #6 • Exam Tuesday

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