COT Science 6 Q3 DLP-simple machine.pptx

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1. Identify simple machines and describe their characteristics and uses

2. Review: Using Jeopardy Game Identify the different forms of energy.

3. It is a form of energy possessed by moving objects. Mechanical energy

4. It is a type of energy stored in molecules. Chemical Energy

5. It is a form of energy that travels in an empty space. Radiant or Light energy

6. It is caused by moving electrons. Electrical energy

7. It is the energy produced by vibrating objects. Sound energy

8. What do you use when you want to 1. cut paper 2. open a bottle 3. slice a piece of fruit?

9. What is simple machine?

10. Simple machine is a device that makes work easier.

11. Show the if the picture shows simple machine and if it is not simple machine.

12. Not simple machine

13. Not simple machine

14. Not simple machine

15. Simple machine

16. Simple machine

17. Simple machine

18. Simple machine

19. Not simple machine

20. Not simple machine

21. 3. Why are simple machines important? 1. What is the song about? 2. What things are mentioned in the song?

22. Comprehension Check: 1. What are the six simple machines mentioned in the video? 2. How will you describe each? 3. What are the uses of each? 4. Why do we use simple machines? 5. Why are simple machines important?

23. Direction: Some machines are so simple that we do not even realize that they are machines. Identify each simple machine described below. The shapes of the boxes have been provided to guide you. Write the answers on your .

24. 1. Machine for opening cans c n o

25. 2. Machine for cutting paper C s

26. 3. Machine used for moving sand from one place to another w b

27. 4. Machine used for pulling nails h

28. 5. Machine used for catching fish F r

29. Pantomime Strips

30. Differentiated Activity in three groups. Reminders to pupils before doing the activity: Be polite by listening attentively with each other during group activity. Group Presentations - 10 minutes only for group sharing and planning - 3 minutes only for each group presentation  

31. House Rules/Standards/Guidelines: (Follow the mnemonic/memory device.) G- Give thoughtful feedback R- Respect others & their thoughts O- On task all the time U- Use soft voices P- Participate actively S- Stay with your group

32. Rubrics in Participation/Group Activities:   POINTS INDICATORS 5 -Shows eagerness and cooperation to do the task, participate actively, do great help to the group 4 -Shows eagerness and cooperation to do the task, good followers only 3 -Participated but late, with teacher’s supervision 2 -Activity was done but does not show eagerness to participate or cooperate 1 -No interest in participating the activities

33. Group’s Task Each group is given activity sheet to answer. * Group 1: Crossword Puzzle. Identify the simple machine being described. *Group 2 : Where do I belong? Using the different pictures classify what simple machine they belong. * Group 3: What I am?

34. Making generalizations and abstractions about the lesson 1. What are the different simple machines? 2. How will you describe each simple machine.

35. SIMPLE MACHINE

36. Directions: Read carefully, and then choose the correct answer by writing the letter on your answer sheet. Which of the following best explains why lifting a heavy object with a single fixed pulley and rope makes the task seem easier? a. Less force is needed to lift the object b. The direction of the force required to lift the object is changed c. Less work is done when moving the object d. The force needed to move the object is applied over a greater distance

37. 2. The three types of pulleys systems are: Fixed, Movable and ________. a. Block and Attack b. Tackle and Sing c. Movable and Pull d. Block and Tackle 3. A stiff bar that moves about a fixed point is a a. lever b. wheel and axle c. wedge d. inclined plane

38. 4. Which simple machine would stairs be an example? a. a wedge c. a pulley b. an inclined plane d. a lever 5. Which is an example of a wheel and axle? a. Hammer c. Ramp b. Wagon d. Flag Pole

39. Additional activities for application or remediation Give three safety measures in handling simple machines.

40. Thank you

41. TYPES OF SIMPLE MACHINE

42. Lever The lever is a device, which has a fulcrum or a pivot point, the effort end where force is applied, and the resistance end is where the load is located.

43. Parts of a Lever 4 . Resistant Arm ( dr ) – the distance of the resistance to the fulcrum. 5. Effort Arm (de) – the distance of the effort to the fulcrum.

44. First Class Lever (RFE or EFR) The Fulcrum is between the Effort and the Load or Resistance as in a seesaw.

45. Second Class Lever FRE or ERF The Fulcrum lies at one end, the Effort is applied to the other end and the Load is in the middle, as in a wheelbarrow.

46. Third Class Lever (REF or FER) The Fulcrum is in one end, but the load is at the other end, and the effort is applied in the middle, as in a human forearm.

47. INCLINED PLANE

48. Inclined Plane An inclined plane is a flat supporting surface, tilted at an angle with one end higher than the other.

49. Inclined Plane An inclined plane lessens the effort exerted over a distance and changes its direction. The lesser the angle of the inclined plane, the longer the distance, the lesser the effort needed.

50. Wedge A wedge is a double incline plane that is sharpened to an end. It can be used to separate two portions of an object.

51. WEDGE

52. Wedge The thinner the wedge is, the lesser effort is needed to cut objects.

53. WEDGE

54. Screw Screw is a modified inclined plane. Screws are used to lift heavy objects or fasten two objects together.

55. SCREW

56. Screw The spiral ridges of a screw is the Thread and the distance between each thread is the Pitch.

57. Pulley A pulley is a modified wheel and axle. It is used to lift loads and apply forces. A pulley has a rope sliding on the groove of the wheel.

58. PULLEY

59. Kinds of Pulleys 1. Fixed Pulley Is generally hung, making the wheel stationary (not moving).

60. Kinds of Pulleys 2. Movable Pulley – the entire wheel together with the axle travels along the rope. Ex: Zipline

61. MOVABLE PULLEY Zipline uses a Movable Pulley

62. Kinds of Pulley 3. Block and Tackle is a combination of movable and fixed pulley.

63. Block and Tackle Pulley

64. WHEEL AND AXLE

65. Wheel and Axle The Wheel and Axle refers to the assembly formed by two discs of different size attached together so they can rotate (turn around) together around the same axis.

66. WHEEL AND AXLE

67. Wheel and Axle

68. Wheel and Axle It has the same appearance to the pulley but the Wheel is fixed to the Axle.

69. Thank You….