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Chapter 7 Inequalities. Day…. CRA s All Day Writing Inequalities Solving One-Step Inequalities (+ and - ) Solving One-Step Inequalities (x and ÷ ) No School. Day 1. Bell Work. Justify your Response. Vocabulary. A mathematical sentence indicating two quantities are not equal. . - PowerPoint PPT Presentation
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Chapter 7
Inequalities
Day…..1. CRA s All Day
2. Writing Inequalities3. Solving One-Step Inequalities (+ and - )
4. Solving One-Step Inequalities (x and
÷ )
5. No School
Day 1
Bell Work
Justify your Response
Vocabulary•
•
•
•
•
•
•
A mathematical sentence indicating two quantities are not equal.
The distance between a number and 0 on a number line.
Negative Integer -
Inequality -
Rational Number -
Absolute Value-
Positive Integer-
Number Line -
Any number greater than 0. They can be written with or without the + sign and appear to the right or above the 0.
Any number less than 0. They are written with a – sign and appear to the left or below 0
Any number that can be written as a fraction.
A line on which numbers are marked at intervals, used to illustrate simple numerical operations.
Variable - A letter or symbol used to represent an unknown number.
I Can….Interpret statements of
inequality as statements about the relative
position of two numbers on a number line
diagram.
Interpreting and Writing Inequalities
Essential Understanding: An inequality is a mathematical sentence that compares quantities using the symbols >, <, ≥, and ≤.
Example:
Group Work
Please take out your maker boards
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 2
Bell Work
Justify your response.
Homework Check
Vocabulary• _________
• ___________
• ___________
• ____________
• _____________
• ___________
• ___________
A mathematical sentence indicating two quantities are not equal.
The distance between a number and 0 on a number line.
Negative Integer-
Inequality -
Rational Number -
Absolute Value-
Positive Integer-
Number Line -
Any number greater than 0. They can be written with or without the + sign and appear to the right or above the 0.
Any number less than 0. They are written with a – sign and appear to the left or below 0.
a number that can be written as a fraction
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
I Can….
Write inequalities for a given number line
representation.
Writing and Graphing Inequalities
Essential Understanding: • Inequalities can be graphed on a number line using an
open or a closed dot and a ray ( )• An open dot means the number is not included
(used with < and > symbols) • A closed dot means the number is included (used with ≤ and ≥)• The direction of the ray or shaded area indicates the
solution set _________________ -3 -2 -1 0 1 2 3
x > -1
Watch This• http://
learnzillion.com/lessons/1507-write-inequalities-given-a-number-line-representation ( 3 mins)
Group Work
Please take out your maker boards
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 3
Bell Work
Justify Your Response
Homework Check
Vocabulary• _________
• ___________
• ___________
• ____________
• _____________
• ___________
• ___________
A mathematical sentence indicating two quantities are not equal.
The distance between a number and 0 on a number line.
Negative Integer-
Inequality -
Rational Number -
Absolute Value-
Positive Integer-
Number Line -
Any number greater than 0. They can be written with or without the + sign and appear to the right or above the 0.
Any number less than 0. They are written with a – sign and appear to the left or below 0.
a number that can be written as a fraction
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
I Can….Solve one-step
inequalities involving addition and subtraction
Solving One-Step Inequalities
Essential Understanding:
Addition and subtraction and multiplication and division properties can be used to solve inequalities.• If the same number is added or subtracted from each side of an
inequality, the inequality remains true.• If the same positive number is multiplied or divided from each
side of an inequality, the inequality remains true.
Examples:3 < 6 3 < 6 x > 6 x > 6
Solving InequalitiesEssential Understanding:Inequalities can be solved by finding values for the variable that make the inequality true.
Examples: X +2 < 8 = x < 6
8-2 = 6 or 6 + 2 = 8
X must be a number less than 6 to make this sentence true. Therefore, any number less than 6 (5,4,3,2,1,0,-1,-2, etc… would make the sentence true So…… x < 6 or x ≤ 5
Your Turn….
• Clear your desk of everything but a calculator and a pencil.
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 4
pOp Quiz
• Take out a pencil and a calculator
• Clear everything else from your desk
Homework Check
Vocabulary• _________
• ___________
• ___________
• ____________
• _____________
• ___________
• ___________
A mathematical sentence indicating two quantities are not equal.
The distance between a number and 0 on a number line.
Negative Integer-
Inequality -
Rational Number -
Absolute Value-
Positive Integer-
Number Line -
Any number greater than 0. They can be written with or without the + sign and appear to the right or above the 0.
Any number less than 0. They are written with a – sign and appear to the left or below 0.
a number that can be written as a fraction
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
I Can….Solve one-step
inequalities involving multiplication and
division.
Solving One-Step Inequalities
Essential Understanding:Inequalities can be solved by finding values for the variable that make the inequality true.
Examples: 2x < 16 = x < 8
16 ÷ 2 = 8 or 8 x 2 = 16
X must be a number less than 8 to make this sentence true. Therefore, any number less than 8 ( 7.2, 8, 9 ½, 44, etc… ) would make the sentence true . So…… x < 8 or x ≤ 7
Practice
Please take out your maker boards
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 5
Enjoy your Fall Break
No School
Not Used this Week
Computer Station• www.learnzillion.com (6 minutes per video)• www.tenmarks.com (10 questions per assignment)
Station Rotations1. Write your exit ticket.
2. Pack up everything but a pencil.
3. You will have 15 minutes to complete each rotation
1st Rotation
2nd Rotation
3rd Rotation
4th Rotation
Group WorkBefore we begin…….1. Complete an exit ticket.2. Pack up everything except for your
pencil and calculator.3. Sit quietly unit everyone is ready.
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