 Chapter 8: Variables and Equations Math Grade 7.

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Presentation transcript:

 Chapter 8: Variables and Equations Math Grade 7

Thursday January 23 rd  Mental math (2min)  Review (vocabulary)

 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 Key Words In this equation: 3x 2 + 2x x, what are:  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

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 #)

Friday: Problem Solving January 24 th  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?

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

Thursday, February 6 th Using Equations to solve Problems  Correction Homework : p.239 #1-39 (only odd #)  p (together)  Homework: Review p.244-p.245 (odd number only)  Algebra Exam Tuesday

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