Form: Four

Form: FourTopic: Standard Form

Learning Outcomes: At the end of the lesson, students will be able to:i. Round off positive numbers to a given number of significant figures when the numbers are greater than 1 and less than 1.

ii. State the number of significant figures of a given positive numbers. iii. Write the positive numbers to a given number of significant figures. Prior knowledge:

Students can identify place value and value of each digit in whole numbers.

Students can round whole numbers.

Students can state the place value and value of each digit in decimals. Students can round decimals to the nearest whole number or up to given decimal places. Teaching aids/resources: Mahjong papers manila cards PowerPoint

Attitudes and values: Meticulous

Confident and diligent. Honest

Responsibility

CooperativeCreative and critical thinking skills: Making connection

Categorizing and generating possible idea

Reflection Thinking SystematicallyInstructional Steps

Step/ DurationContentActivity (Discourse)AV/CCTS/Strategy/Method/TA

Teachers roleStudents role

Step 1:Set induction

(3 minutes)The use of significant figures

Before starting the lesson, teacher asks the students what is the population in Malaysia now?

Teacher will give the actual number of population in Malaysia (24.8089 million) and compared it to students answer. From the comparison, teacher tries to relate it to the topic students are going to learn. A big title of topic will be shown by using manila card (what is significant figures). Teacher discusses with students what significant figure is and why we need to use it?

Several students will be selected to give the answer. Students discuss with students and listen actively

Students give suggestion example of our daily life which applied significant figures.

Teaching Aid

- concept map Attitudes and Values:

meticulous

Approach: teacher and student centered

Strategyquestioning Method: discussionTechnique:2-way interaction CCTS Making connection

Step 2:Instructional

Development

(20 minutes)Rules of significant figures-All non-zero digits are significant figures

- The digit zero can be a significant figure or not depending on its position in the number

Rounding off numbers-the method of rounding off a number to a given number of significant figures. Teacher shows a table which consist of a few rules that we must follow when rounding off a number to given number of significant figures. teacher gives some examples

Teacher recall students that we have learnt to round off numbers to required place value through approximation. Teacher introduce another method of approximation is to round off a number to an appropriate number of significant figures.

Teacher shows a flow chart which shows the method of rounding off a number to a given number of significant figures.

Teacher explains the flow chart by using suitable examples.

Students are asked to identify the number of significant figures to the examples given.

students are asked to give more example of each rule students are asked about the level of accuracy of measurement depending on the number of significant figure it have.(e.g. the accuracy of ammeter different from the multimeter)

Students differentiate the accuracy of the two instruments used. Students listen attentively

Teaching Aid -Mahjong paper, manila card, maker pen, white boardAttitude and Value -confident and diligent.Approach: teacher and student-centered

Method: expository and discussion

Strategy:- using tables and flow chart

Technique: - 2-way interaction

CCTS: Categorizing and generating possible idea

Step 3 Instructional

Development

(7 minutes)Worksheet 1 The teacher ask student to form 5 with 4 students in each group. The teacher gives each group a worksheet to answer by the student.

The teacher monitors the students activity and act as a facilitator

The teacher discusses student with student

Student work in their respective groups. Students discuss in groups to carry out the task given in worksheet. Students hold discussion in their respective expert groups.Teaching Aids:

-worksheet 1Methods:

-Cooperative learning

-Explanation

Technique:

- Discussion

Approach:

- Student centeredCCTS:

- Thinking Systematically

Attitudes and Values:

-Honest

- Responsibility

- Confident

- Cooperative

Step 4:

Evaluation(9 minutes)Task : practical work from what student have learnt

-writing down the answer of the question given

-complete the sentencesMathematics activity

the teacher provides one paper sheet to each group

teacher explain the rule of the activity

Rule activity

there is one sentences that are not complete

the student need to find the blank sentence to complete the sentence

the way to find the blank sentences is student must answer all the question given

each question have one letter

So the students need to find all the answer to get the complete letter.

The letter will form a sentences which is the sentences in the blank sentences

Students pay attention to the teachers explanation.

Each group will take the paper and show it to all group members. Students work respectively in their groups

Students discuss the answer with teacher and check their answer.

Teaching Aids:

-PowerPoint

Methods:

-Cooperative learning

-Explanation

Technique:

- Discussion

Approach:

- Student centered

CCTS:

- Thinking Systematically

Attitudes and Values:

-Honest

- Responsibility

- Confident

- Cooperative

Step 5:

Closure

(1 minutes)Revise the content we had learnt.

Homework given from textbook. Teacher asks student to reflect on what they have learned.

Teacher will help student by giving guide line to them for make their own reflectionTeacher will give exercises to the students as a homework Student will try to reflect on what they have learned.

Student pay attention and listen carefully before do the reflection

Student will do the exercise given as homework and hand it up for the next class. Methods:

- Questioning

Technique:

- DiscussionApproach:

- Student centered

CCTS:

- Reflection

Attitudes and Values:

- Honest

- Responsibility

- Confident

- Respect