1 / 13

21 st Century Lessons

21 st Century Lessons. Writing Algebraic Expressions. Warm Up-Matching. OBJECTIVE : SWBAT write an algebraic expression from a written expression. LANGUAGE OBJECTIVE: SWBAT discuss the difference between algebraic and written expressions. .

elga
Télécharger la présentation

21 st Century Lessons

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 21st Century Lessons Writing Algebraic Expressions

  2. Warm Up-Matching OBJECTIVE: SWBAT write an algebraic expression from a written expression. LANGUAGE OBJECTIVE: SWBAT discuss the difference between algebraic and written expressions. Choose the numerical expression that best matches each written expression. Numerical Expression Written Expression d 1) 2) 3) 4) a) the product of 9 and 3 b) 9 subtracted by 3 c) 9 divided by 3 d) the sum of 3 and 9 a c b Agenda

  3. Agenda: OBJECTIVE: SWBAT write an algebraic expression from a written expression. LANGUAGE OBJECTIVE: SWBAT discuss the difference between algebraic and written expressions. 1) Warm Up Matching-Independent 2) Launch Operations to Words-Groups 3) Explore Mini Lesson-Whole Class 4) Practice Matching Expression-Whole Class and Partners 5) Assessment Exit Slip-Independent and Partners Agenda

  4. Launch-Operations to Words Directions:Put each word from the list into the operation’s box that it most likely expresses. plus difference less than factors decreased by times ratio increased by separate minus of sum product multiplied less more than in all divided quotient per subtract each twice Agenda PC Users

  5. Launch- Mac User Directions:Put each word from the list into the operation’s box that it most likely expresses. plus difference less than more than plus factors increased by decreased by sum times in all ratio increased by difference minus separate decreased by minus less than of subtract less sum product product factors multiplied times less twice more than of multiplied each in all divided divided quotient quotient per per separate Next Slide subtract ratio each twice Agenda

  6. Explore-Mini Lesson Write the following as a numerical expression. • The product of ten and seven. or • The product of ten and five. or • The product of ten and a number. VARIABLE Think…what can we use to represent a number when we don’t know the number? Click to reveal next part Agenda

  7. Explore- Mini Lesson Variable: a letter or symbol that represents an unknown quantity. Now, for my next trick, I will introduce a new way to write multiplication. Write as a algebraic expression. The product of ten and a number. A number written next to a variable means multiplication. Agenda

  8. Explore- Mini Lesson This new expression, 10n, is called an Algebraic Expression. Why do mathematicians call them Algebraic Expressions? Vocabulary • Algebraic Expression: an expression containing at least one variable. • Numerical Expression: an expression containing one or more numbers and operations. Click to reveal next part Agenda

  9. Explore- Mini Lesson Vocabulary • Written Expression: an expression written with words. The sum seventeen and number Three times the difference of nine and seven • Variable: any letter in the alphabet or symbol that represents an unknown quantity. Agenda

  10. Practice- Whole Class Write an algebraic expression for the problems below. Important!!!! Identify the operation(s) by underlining key words. a) The sum of ten and a number. b) The quotient of a number and twelve. c) Eleven decreased by five times a number. Agenda

  11. Practice- Partners The sum of a number and ten The product of ten and a number increased by eight The quotient of a number and eight Eight less than twice a number Ten divided by a number Ten decreased by three times a number The product of eight and a number Name ________________ Date ___________ Class Work: Written Expressions vs. Algebraic Expressions Directions: Match the written expressions in Column A with thealgebraic expressions in Column B. COLUMN A COLUMN B Eight increased by a number Agenda

  12. Practice- Summary Class Work: Written Expressions vs. Algebraic Expressions Directions: Match the written expressions in Column A with thealgebraic expressions in Column B. COLUMN A COLUMN B The sum of a number and ten The product of ten and a number increased by eight The quotient of a number and eight Eight less than twice a number Ten divided by a number The product of eight and a number Ten decreased by three times a number A number decreased by ten Eight increased by a number Ten more than twice a number Agenda

  13. Assessment- Exit Slip Directions: 1) Write your own algebraic expressionusing n, 3, 5. You must use at least 2 operations. 2) Translate your algebraic expression into a written expression. 3) Turn and Talk: Read your written expression to your partner. Have your partner write the algebraic expression. Switch roles. 3) Agenda

More Related