Math 8-Q1-Week 2 Lesson [Autosaved].pptx

JOINT VARIATION

1. Math 8 Quarter 1 Week 2

2. Time for REVIEW

3. TRUE or FALSE

4. True or False? Mean is the the middle value in a given set of data. False

5. True or False? The mode in the given set of data 2,5,1,2,0 is 2 True

6. True or False? Mode is the value in the given set of data that occur most frequently. True

7. True or False? The mean in the given set of data 2,3,4,5 is 3.5 False

8. True or False? The median in the given set of data 0,1,2,5,6 is 2 True

9. Agenda Use real-life situations to illustrate algebraic expressions. Add and subtract simple monomials.

10. Let’s Play!

11. Activity 1

12. Activity 1

13. Activity 2 1 -11 -2 -13 8 15 -12 -4

14. · ALGEBRAIC EXPRESSION – an expression consisting of variables and constants along with algebraic operations (addition, subtraction, multiplication or division). · ALGEBRAIC TERM – either a single number or letter, or the product of several numbers or letters. Terms are separated by the operations addition and subtraction. Unlocking Content Vocabulary

15. · VARIABLE - any letter or symbol that represents a number · CONSTANT – a number that has a fixed value that does not change · SIMILAR TERMS – terms that have the same variable raised to the same power. · MONOMIAL – an algebraic expression having one term · BINOMIAL - an algebraic expression having two terms · MULTINOMIAL - an algebraic expression that contains at least two term Unlocking Content Vocabulary

16. LIST OF KEYWORDS FOR OPERATIONS

17. LET’S TRY Translate the following statements into algebraic expressions. 1. two more than y ballpens. 2. thirteen pesos added to x pesos. 3. eight subtracted from b marbles. 4. v increased by five candies. 5. twice a number m bacteria.

18. LET’S TRY 6. six less than m passengers. 7. z chocolates divided by seven persons. 8. half of n kilograms of meat. 9. twelve chocolates decreased by w chocolates. 10. twice a number c books.

19. Stay focus! Addition and Subtraction of Monomials

20. Let’s Add/ Subract !

21. Go! 8 - 7 = 1

22. Go! -6 - 4 = -10

23. Go! -2 + 8 = 6

24. Go! -3 + 7 = 4

25. Go! -7 + 5 = -2

26. Go! -8 –( -6) = -2

27. Go! 9 –(- 8) = 17

28. Go! -3 + -4 = -7

29. Go! -12 -5 = -17

30. Go! 9 –(-4) = 13

31. LET’S BEGIN! ADD. 3x + 4x -5x 2 + 3x 2 4a + 6a + (-8a) -11xy + 7xy + (-15xy)

32. Continue… SUBTRACT. 4x 2 – 6x 2 –7x – (10x) –10ab – 15a 9x 2 – 4x

33. YOUR TURN! -10b 3 c + (-9 b 3 c) + b 3 c –12c 2 d 2 – (-8 c 2 d 2 )

34. YOUR TURN!

35. Stay focus! Addition and Subtraction of Binomials and Multinomials

36. Examples (-5x + 3) + (2x + 2) 2. (18 + 6mn) + ( -8 – 19mn) + (12 – mn) 3.(2x 2 + 4x –3) + (–3x 2 – x + 2)

37. Examples (12x 2 + 4x) – (4x 2 – 7x) (-a 2 b 3 c – 17) – (8a 2 b 3 c – 7) (8x 2 + 2x – 9) + (-14x 2 - 2x – 11)