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Ninth Graders Who Lack Basic Algebra Skills. Learners. E nvironment. In a Computer Lab. Objective. Students will demonstrate their abilities to solve equations by completing the square using this power point as a tutorial with 90% accuracy. By: Brittany Brown Woori Kim –Lab 04.

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  1. Ninth Graders Who Lack Basic Algebra Skills Learners

  2. Environment In a Computer Lab

  3. Objective • Students will demonstrate their abilities to solve equations by completing the square using this power point as a tutorial with 90% accuracy.

  4. By: Brittany Brown Woori Kim –Lab 04 Completing the Square

  5. Main Menu • Lesson • Instruction for Quiz • Quiz START START START

  6. Lesson : 9-4 Solving Quadratic Equations By Completing the Square

  7. Why is this Important? • Since few quadratic expressions are perfect square trinomials, the method of completing the square can be used to solve some quadratic equations…

  8. Formula • General quadratic formula • To complete the square we will only use: • “” is the end result of the complete square

  9. Step 1: • Find your “b” in the equation Click here for explanation

  10. Step 1: Explanation • Remember the Equation • There for in this equation + 4 is your “”

  11. Step 2: • After you find “” in the equation. Divide “” by 2

  12. Step 2: Explanation `

  13. Step 3:

  14. Step 3: Explanation

  15. Example 1 #Hint: Step 1: find the ; = 6 Step 2: divide Step 3: Square answer

  16. Example 2

  17. Example 3 • Your turn…. Complete the Square • What does equal

  18. Example 3 Continue…. • Did you Get = 144 144 =

  19. But WAIT… What if you already have a value for “c” in the equation, but it is NOT a completed square answer? Such as…. Now what……..

  20. Well we still need to find “” but have do a little more work First get all the numbers on one side:

  21. Now just worry about the left hand side of the equation for the moment… Lets find Looks familiar

  22. Now that you found what c equals, lets finish solving the problem *remember the equation Step1: add c to both sides Step 2: factor Step 3: combine like terms Step 4: take square root Step 5: get x by itself

  23. Example 1:

  24. Example 2:

  25. Example 3 Your turn….. What are the values for x

  26. Example 3 continue… Did you get

  27. Lesson Over • Go Back to the Lesson • Go to the Instruction for the Quiz Click Here Click Here

  28. Instructions…. • Take out a sheet paper and answer the questions. Show all your work on the paper and turn your paper at the end of the quiz. *Make sure you write down the letter answer to the questions as well Take the Quiz

  29. Quiz Question 1-5 find the value for 1.) • 3 • 2 • 6 • 4

  30. Quiz Cont…. 2.) • 1 • 5 • 2 • 8

  31. Quiz Cont…. 3.) • 10 • 100 • 40 • None of the above

  32. Quiz Cont…. 4.) • 1000 • 35 • 4900 • None of the above

  33. Quiz Cont… 5.) • 20 • 20.25 • 9 • 24

  34. Quiz Question 6-10 solve for x, round to the nearest tenth if necessary 6.) • 3,6 • 3,5 • 4,5 • 6,1

  35. Quiz Cont…. 7.) • 4,9 • 6,7 • -3,5 • -5,3

  36. Quiz Cont… 8.) • -11,-1 • 1,11 • 12,1 • 13,4

  37. Quiz Cont… 9.) • 0.8, 5.2 • -5.2, 0.8 • 1, .9 • None of the above

  38. Quiz Cont.. 10.) • 0.2, 4.7 • 0.3, -3.4 • -0.3, -3.7 • None of the above

  39. Quiz is Over Turn In Your Paper First Check Answers

  40. Quiz Answer next

  41. Good Job This is the End of the Tutorial Return to the main menu

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