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Learning Objectives:

Describe what friction is.

(S6FE-IIIa-c-1)

Q3W1D1

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MOTIVATION

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  • Four Pics One Word.
    • Study the relationships of the four pictures below. Identify the word that could describe the four pictures. Write your answers in the boxes below.

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Exploration

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Let us learn more about friction.

Let’s watch a video clip.

 

Questions:

1. What is friction?

2. What causes friction?

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Group Activity

Activity: Moving in Different Surfaces

Let’s find out:

How does friction affects the motion of objects.

 

Let’s use these materials:

Toy cars, wax paper, sand paper, blocks of wood.

 

 

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Group Activity

Let’s do it this way:

        • Set the ramp with one side higher.
        • Cover one side with wax paper. This is your smooth surface.
        • Cover the other side with sand paper. This is your rough surface.
        • Have the pupils roll the toy car down the ramp.

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Group Activity

Let’s write down our observations.

1 .In which surface does the toy car move faster? Why?

2. Which surface registered a greater friction? Why?

3. How does friction affect the motion of objects?

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Explanation

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  1. Reporting of group outputs.
  2. Analysis and discussion of pupils’ outputs

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Generalization:

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What is friction?

Complete the web on what you know about friction.

 

FRICTION

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Application:

Act out different activities that involve friction

Group I-Activities in school

Group II-Activities at home

Group III- Activities in the playground

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Application:

Guided Practice: Distribute meta cards with phrases and sentences. Say TRUE if it describes friction and FALSE if not.

_______1. Friction is a force.

_______2. Friction is produced by rubbing or touching two surfaces.

_______3. Friction is energy stored.

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Application:

_______4 Friction is greater on rough surfaces.

_______5.Friction is produced when object is in contact with each other.

_______6. Lighted candle produce friction.

_______7.Friction is produced by moving objects.

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Application:

____________8.Friction is much present on rocky or rough road.

_______9.Heat is produced by friction.

_______10.It is easier to pull object with less friction.

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Application:

Ask: How does friction affect our daily activities.

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Evaluation

Directions: Read the following questions. Choose the letter of the correct answer.

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1

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Which of the following best describes friction?

A. It is a force that occurs between solids.

B. It is a force that occurs only on rough surfaces.

C. It is a force that occurs between solids and liquids.

D. It is a force that occurs when surfaces touch each other.

 

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Which has the least friction?

  1. polished floor
  2. sandy floor
  3. rough floor
  4. rubberized floor

 

 

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Friction is ___________.

A. gravity

B. matter

C. work and motion

D. force that resists motion

 

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Which of the following is true?

I. Friction slows down a moving object.

II. Smooth surface has more friction.

III. Objects move slowly on a rough surface.

IV. Friction is not present in a smooth surface.

A. I,II C. I,III

B. II,III D.I,III,IV

 

 

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What do rubbing two surfaces produce?

  1. force
  2. energy
  3. work
  4. friction

 

 

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Assignment

Cut pictures showing friction.

 

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THANK YOU!!!

LIWAYWAY V. NIPAY