Topicmf999ee030741450a_1528449000663_0Topic

Negative numbers on the number linenumber linenumber line

Levelmf999ee030741450a_1528449084556_0Level

Second

Core curriculummf999ee030741450a_1528449076687_0Core curriculum

III. The integers.

The student:

1) gives the practical examples of using the negative numbers,

2) interprets the integers on a number linenumber linenumber line,

3) compares the integers.

Timingmf999ee030741450a_1528449068082_0Timing

45 minutes

General objectivemf999ee030741450a_1528449523725_0General objective

Reading, interpreting and processing data presented in various forms

Specific objectivesmf999ee030741450a_1528449552113_0Specific objectives

1) Indicating the negative integers on the number linenumber linenumber line.

2) Comparing the integers using the number linenumber linenumber line.

3) Communicating in English; developing mathematical and basic scientific, technical and digital competences; developing learning skills.

Learning outcomesmf999ee030741450a_1528450430307_0Learning outcomes

The student:

- indicates the negative integers on the number linenumber linenumber line,

- reads the coordinates of the negative numbers indicated on a number linenumber linenumber line.

Methodsmf999ee030741450a_1528449534267_0Methods

1) Class game.

2) Situational analysis.

Forms of workmf999ee030741450a_1528449514617_0Forms of work

1) Individual work.

2) Work in pairs.

3) Group work.

Lesso stages

Introductionmf999ee030741450a_1528450127855_0Introduction

The students give the examples of the positive and negative numbers in particular the opposite numbers. They indicate them on the number linenumber linenumber line.

Every student brings the pawns and two sets of cards. The cards of the first set have the following numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 – there is different number on each card. The other set of cards has the numbers: -1, -2, -3, -4, -5, -6, -7, -8, -9 – written in the same way , one number on each card.

Proceduremf999ee030741450a_1528446435040_0Procedure

Students work individually using their computers. They are going to watch where the negative numbers are marked on the number linenumber linenumber line.

[Slideshow]

The students work in pairs using the cards they have prepared earlier. First they draw the number linenumber linenumber line and indicate some integers. They mark positive numbers with green and negative numbers with blue. They mark zero with black as it is neither positive nor negative number.

[Ilustration 1]

Now every student draws one card of the set of cards and puts his card in the appropriate place on the number linenumber linenumber line. The students compare their numbers and write the inequalities in their notebooks. The winner is the person who has drawn the greater number.

The students compare negative numbers.

Task
Fill the gaps with the following signs: <, > or =.

a) – 25 …….– 23

b) 7 …….-36

c) -87 ….-78

The students work in pairs again. They shuffle the cards, take one of them and say which of the cards is greater.

The students and the teacher draw following conclusion:

- Each positive number is larger than the negative one.
- Zero is larger than any negative number and smaller than any positive number.
- In case of two negative numbers the larger is the one which is closer to zero on the number line.
mf999ee030741450a_1527752263647_0- Each positive number is larger than the negative one.
- Zero is larger than any negative number and smaller than any positive number.
- In case of two negative numbers the larger is the one which is closer to zero on the number line.

Task
The students put the numbers in order from the smallest to the largest one:

2; -9; 0; 4; -6; 1; -4; 3; 5.

Task
The students draw the number linenumber linenumber line and indicate the pairs if the opposite numbers.

4 and – 4;

- 7 and 7;

2 and – 2;

- 5 and  5.

An extra task
What number was marked with dot on the number linenumber linenumber line?

[Ilustration 2]

Lesson summarymf999ee030741450a_1528450119332_0Lesson summary

The students do the summarising tasks.

Then they sum up the class drawing the conclusions to memorise:

- Each positive numberpositive numberpositive number is larger than the negative one.

- Zero is larger than any negative numbernegative numbernegative number and smaller than any positive numberpositive numberpositive number.

- In case of two negative numbers the larger is the one which is closer to zero on the number linenumber linenumber line.

Selected words and expressions used in the lesson plan

integerintegerinteger

negative numbernegative numbernegative number

number larger than zeronumber larger than zeronumber larger than zero

number less than zeronumber less than zeronumber less than zero

number linenumber linenumber line

opposite numberopposite numberopposite number

positive numberpositive numberpositive number

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number line1
number line

oś liczbowa

R1HuBugEAKITI1
wymowa w języku angielskim: number line
positive number1
positive number

liczba dodatnia – to liczba większa od zera

RT2vQrhdTzd7L1
wymowa w języku angielskim: positive number
negative number1
negative number

liczba ujemna – to liczba mniejsza od zera

R1Y5PM9bHio6X1
wymowa w języku angielskim: negative number
integer1
integer

liczba całkowita

Rp31t4x1FB7ez1
wymowa w języku angielskim: integer
number larger than zero1
number larger than zero

liczba większa od zera

RozL7AVF2M8Qa1
wymowa w języku angielskim: number larger than zero
number less than zero1
number less than zero

liczba mniejsza od zera

R1RtGtILLqXRJ1
wymowa w języku angielskim: number less than zero
opposite number1
opposite number

liczba przeciwna

R1VTmr3AG50HV1
wymowa w języku angielskim: opposite number