Inertia

Subject

: Physics

Class

: Form 4 Bestari

Date

: 21 Mei 2009

Time

: 3.00-3.30 pm (30 minutes)

No. of students

: 38 students

Learning Area

: Forces and Motion

Learning Objective : Understanding Inertia

Learning Outcomes : At the end of the lesson, a student is able to:

A.

Master content knowledge

a. State the definition of inertia in their own words. b. State the relationship between inertia and mass.

c. Gives examples of situations involving inertia in daily activities.

B.

Master Scientific Skills/TSTS a. Hypothesizing the relationship between inertia and mass.

C.

Demonstrate Scientific Attitudes and Noble Values a. Actively participate in discussion by distribute some ideas work as a team.

Scientific Concepts: Inertia

a. The tendency of the object to remain at rest, if it is moving, to continue its motion in a straight line.

b. increases with mass

Materials, equipments and resource materials: a. Notes on power point slides b. Video clips Consideration of Safety Precautions: None

Prior Knowledge: Students have already learned in analysingmotion graphs, so they known about velocity.

Phase

Content

Introduction/ Eliciting Ideas

-velocity = the speed in specified direction (vector quantity)

( 5 minutes)

-mass = the amount of matter in an object (unit SI= kg)

-weight = the force of gravity acting on an

Teaching and Learning Activities Teacher Activities Student Activities 1.Teacher shows a 1. Students video caused by inertia respond to teachers and elicit students’ questions. ideas from their observation from the video.

2.Teacher makes connection to students’ prior knowledge by asking question.

2. Students respond to teacher’s questions based on their knowledge.

Notes Strategy/Techniq ue: Whole class Q&A

Resources: PP slides, video

Structuring/ Restructuring of Ideas (10 minutes)

object. - Newton’s first law in motion / inertia law - an object at rest stays at rest and an object in a motion stays in motion , unless acted upon by an external forces.

- Relationship between inertia and mass (The larger the mass the larger the inertia)

Application of Ideas (10 minutes)

- positive effects of inertia

1.Teacher construct students’ idea to define inertia by making demonstration and showing animation.

2. Teacher ask the relationship between inertia and mass (hypothesizing)

3.Teacher guide students to test their answer/show a video to prove the hypothesis.

4.Teacher test students’ understanding by asking the examples of situations involving inertia in daily activities.

1.Students observe, make inference

Strategy/ Technique: Interactive demonstration by teacher

2. Students make prediction and hypothesize

An inquiry activity

Resources: PP slides, video 3. Students observe and make conclusion

4. Students answer based on their understanding.

1.Teacher provide some envelopes including 2 situationsboth of them applied inertia concept

1.Students choose and discuss in a group-why it can be happen based on inertia concept

2. Briefing

2. Students make the conclusion

Strategy/ Techniques Group discussion

An inquiry activity in groups.

Reflection/

-The inertia law

Closure (5 minutes)

1.Teacher gives simple quiz – discussion.

1.Students answer the quiz-make correction

-Relationship between inertia and mass

Strategy/ Techniques: Whole class Q&A

2.Teacher preview the learning outcomes and summarize the topic.

3. Give reading assignment on analysing momentum for next lesson.

2.Students answer teacher’s questions and conclude their lesson verbally.

3.Students take note

Resources: PP slides and paper quiz.