unit 3 pt. 1
TRANSCRIPT
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What is an equation and how is it similar and/or different from an expression?
What is an inequality and how is it similar and/or different from expressions and equations?
Essential Questions:
Unit 3: Equations and InequalitiesPart 1: Expressions VS Equations and Inequalities
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Testing Connection
Which of the following can be identified as an equation?
A.B.C.D.
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1) Is the item above an expression, an equation, or aninequality?
2) Is it possible to determine the value of x? Why or why not?
3) What other information would you need in order to determine the value of x?
Think. Pair. Share.
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Can you now determine the value of x?
What changed?
Think. Pair. Share.
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What about now? Can you determine the value(s) of x?
What is different this me?
Think. Pair. Share.
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Sorting ActivityLook at the following 'items' carefully. With your group,
decide how you would group the items if you had to separate them into three different 'categories'.
Sorting Cards available on CMAPP
Days 2324Supplemental Resources
Be prepared to share your reasoning with the class.
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Discovery Education Video*click the link below*
http://www.youtube.com/watch?v=jRHoXoqCL80
While you watch the video try to determine if your three categories for the Sorting Activity are correct.
After viewing the video, decide with your group if you should rearrange your items into different categories.
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Expressions: Revisit from the last unit
‐ Expressions can be evaluated or simplified, but they cannot be "solved"
Expressions, Equations, & Inequalities
Numerical expressions can be simplified to one number
Algebraic expressions can be simplified
Algebraic expressions can be evaluated for given variables
when x=3 when m=4
I.
NOTES available in pdf format on CMAPP:Days 2324
Supplemental Resources
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Equaon
‐ Equaons can be solved and usually have one soluon ‐ Like a balanced scale
‐ a mathemacal sentence that states two expressions are equivalent‐ has an equal sign in between
Examples:
NOTES II.
NOTES available in pdf format on CMAPP:Days 2324
Supplemental Resources
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EquationsLike a balanced scale
What is the value of x?
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EquationsLike a balanced scale
Can you guess the value of x?
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Expressions, Equations, & Inequalities
InequalityIII. ‐ a mathemacal sentence that states one expression is greater than or less than another expression has inequality signs ‐ Inequalies can be solved and have many soluons ‐ Like an unbalanced scale
Examples:
NOTES (continued)NOTES available in pdf format
on CMAPP:Days 2324
Supplemental Resources
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InequalitiesLike an unbalanced scale
Can you guess some possible values of x?
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InequalitiesLike an unbalanced scale
Challenge: Can you guess some possible values of m?
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Expression
________
is to
is to
AS
Phrase
Equation or Inequality
Language Arts Connection.....Think of a word that completes this analogy
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Expression
________
is to
is to
AS
Phrase
Equation or Inequality
Sentence!
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usually has one solution
a mathematical sentence
a mathematicalphrase
has multiple solutions
has no solutions can have variables
can be simplified
has an equal sign
cannot be solved
can have numbers
can be solved
like a scale
like an unbalanced scale
like a balanced scale
Drag each characteristic to the appropriate spot in the Venn DiagramVenn Diagram available in pdf
format on CMAPP:Days 2324
Supplemental Resources
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usually has one solution
a mathematical sentence
a mathematicalphrase
has multiple solutions
has no solutionscan have variables
can be simplified
has an equal signcannot be solved can have numbers
can be solved
like a scale
like an unbalanced scale
like a balanced scale
solution
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Drag each object below to its appropriate category
Let's revisit the sorting card activity from earlier...did you have them all correct?
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Solution
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Part1Wksht1WORKSHEET available as
Word.doc on CMAPP:Days 2324
Supplemental Resources
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Solutions
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NameDatePd
Problems Answers1
2
3 3
4 4
5 5
2
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Unit3 Part1 Quiz
Identify as either an expression, equation, or inequality.
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Identifying Expressions, Equations, & Inequalities
QUIZ available as Word.doc on CMAPP:
Days 2324Supplemental Resources
(Sample)
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Reteachinghttp://www.eduplace.com/math/mathsteps/3/d/3.represent.ideas.htmlBasic Introduction to Expressions vs Equations
http://www.eduplace.com/math/mathsteps/3/d/3.represent.develop.htmlReview the meaning of inequality symbols
http://exchange.smarttech.com/details.html?id=67cbc914759c4f849c5bd710490bd253File in SmartNotebook for more basic review and practice with Expressions, Equations, and Inequalities
http://www.insidemathematics.org/index.php/classroomvideovisits/publiclessonequationsinequalitiesproperties/242equationsinequalitiesapropertieslessonplanning?
Algebraic Equations, Inequalities & Properties: Lesson Planning
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Enrichment
Introduce Unit 3 Problem Solving Challenge!
Problem Solving Challenge available as Word.doc on
CMAPP:Days 2324Enrichment
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