1. Do Now

2. I can combine like terms in an equation or expression.

3. QUESTION: What does it mean to combine? What is a like term? QUESTION: What does it mean to combine? What is a like term?

4. Variable – any symbol (usually a letter) used to replace a number ▫The most common variables used are “x” and “y”

5. Coefficient – a number that is attached to a variable coefficient coefficient coefficient

6. Term ▫One of the numbers in a sequence  EX: 1, 2, 3, 4, etc. ▫One of the numbers in a series  EX: 1 + 2 + 3 + 4 ▫One part a an algebraic expression which may be a number, a variable or a product  8, 9x, y 2, and 5xyz are all examples of terms

7. Like Terms – 2 or more terms in an expression, equation, or inequality that are exactly alike or the same except for their numerical coefficient ExpressionLike Terms

8. Terms are always separated by addition and subtraction signs term termterm Operation Operation

9. Expressions with un-like terms: 3x + 9y 23ab + b + 4 C – d 19j x 3k

10. Stop and Jot #1 Write 2 expressions that have un-like: ▫1 term with a variable and 1 term without a variable ▫2 terms with different variables

11. Expression with like terms: 16y + y 9.19cd + 1.25cd H x H ⅗ k – ⅕ k

12. Stop and Jot #2 Write 2 expression that have like terms

13. You can _________ like terms with addition and subtraction. ▫Combine the coefficient and don’t touch the variable

14. You can _________ like terms with multiplication and division ▫This will change the exponent or power of your variable

15. Combine the like terms: 1.4x – 1.0x ▫Simplified: 0.4x 7ab + 23ab ▫Simplified: 30ab Y x Y ▫Simplified: ⅛g + ⅝g ▫Simplified:

16. Stop and Jot #3 Think – Write – Pair - Share Why can’t you combine the terms x and y?

17. White boards

22. Independent Practice We will now work independently on our practice sheet. Anything you do not finish needs to be completed as HW. We will have a HW check and review these problems tomorrow at the beginning of class. Remember that we get class points for 100% HW completed!

23. Exit Ticket ① ① 25x +10x-y ② 8h x h ③ 7.25a – 1.12a ④ z + zy + y