Trần Ngọc Thủy – D2016C

RECTANGLE

I.

Aims :

1. Knowledge :

- Help students know the rectangle has 4 sides : there are 2 equally short

sides and 2 equally long sides

- Help students know rectangle has 4 square corners

2. Skill : Students can draw and write the name of rectangles

3. Attitude : Students are interested in learning

II.

Prepare :

1. Teacher :

- Powerpoint

- Rectangles, pictures in studentbook

2. Students : Math studentbook and textbook

III. Procedure :

1. Warm-up ( 3

mins )

Play a game “ Square corners counter ”

- Teacher divided into 2 teams. Each team is given a

drawing.

- The team counts right angles in drawing faster, that

team wins

- Teacher comments and summaries

2. Introduction

to rectangles

( 5 mins)

Teacher hold a rectangle then ask students what

kind of shape it is, call out its name.

State aims and requirement about the lesson

Write the name of lesson on the board

3. New lesson

(10 mins)

Take shape in rectangles

- Require students to check

4 angles by

square and show result: Each angle A, B, C, D

are

right

Rectangle has 4 right angles.

- Require students to measure rectangle’s

sides by ruler and show the result: AB = CD,

AC = BD.

+ 2 sides AB and CD are long sides

+ 2 side AC and BD are short sides

A rectangle has 2 long equal sides, 2 short

equal sides

- Define “length” and “width” of rectangle:

“The length of long sides is called length, the

length of short sides is called width”

- Show the conclusion: A rectangle has 4 right

angles, 2 long equal sides, 2 short equal

sides

Guide students to learn by heart rectangle’s

property

- Hang the conclusion board and require

learners speak out loud all together then

3. Practice

(12 mins)

one by one and learn by heart.

3.1 Exercise 1

Work in pair to choose the rectangles

Teacher invite a random group to come up and

show the result

3.2 Exercise 2

Measure and state the length of sides of 2 given

rectangles (work in books)

Invite 2 students to come up and write the results

3.3 Exercise 3

Ask students to find the ractangles in the image

and answer questions: “How many rectangle are

there? Call out its names?”

Require students to find the length and width of

rectangles in the image write results on notebooks

Invite 3 students come up and write the results on

board.

3.4 Exercise 4

Ask students to draw one more line segment to

create a rectangle into the books

Invite 2 students to come up and work on boars

Ask students if they have other ideas and show the

way how to do it

4. Sum-up

( 2 mins )

Ask students to repeat the conclusion: “A rectangle

has 4 right angles, 2 long equal sides, 2 short equal

sides”

Teacher feedback about the lesson

Require students to prepare the next lesson

“Squares”

RECTANGLE

I.

Aims :

1. Knowledge :

- Help students know the rectangle has 4 sides : there are 2 equally short

sides and 2 equally long sides

- Help students know rectangle has 4 square corners

2. Skill : Students can draw and write the name of rectangles

3. Attitude : Students are interested in learning

II.

Prepare :

1. Teacher :

- Powerpoint

- Rectangles, pictures in studentbook

2. Students : Math studentbook and textbook

III. Procedure :

1. Warm-up ( 3

mins )

Play a game “ Square corners counter ”

- Teacher divided into 2 teams. Each team is given a

drawing.

- The team counts right angles in drawing faster, that

team wins

- Teacher comments and summaries

2. Introduction

to rectangles

( 5 mins)

Teacher hold a rectangle then ask students what

kind of shape it is, call out its name.

State aims and requirement about the lesson

Write the name of lesson on the board

3. New lesson

(10 mins)

Take shape in rectangles

- Require students to check

4 angles by

square and show result: Each angle A, B, C, D

are

right

Rectangle has 4 right angles.

- Require students to measure rectangle’s

sides by ruler and show the result: AB = CD,

AC = BD.

+ 2 sides AB and CD are long sides

+ 2 side AC and BD are short sides

A rectangle has 2 long equal sides, 2 short

equal sides

- Define “length” and “width” of rectangle:

“The length of long sides is called length, the

length of short sides is called width”

- Show the conclusion: A rectangle has 4 right

angles, 2 long equal sides, 2 short equal

sides

Guide students to learn by heart rectangle’s

property

- Hang the conclusion board and require

learners speak out loud all together then

3. Practice

(12 mins)

one by one and learn by heart.

3.1 Exercise 1

Work in pair to choose the rectangles

Teacher invite a random group to come up and

show the result

3.2 Exercise 2

Measure and state the length of sides of 2 given

rectangles (work in books)

Invite 2 students to come up and write the results

3.3 Exercise 3

Ask students to find the ractangles in the image

and answer questions: “How many rectangle are

there? Call out its names?”

Require students to find the length and width of

rectangles in the image write results on notebooks

Invite 3 students come up and write the results on

board.

3.4 Exercise 4

Ask students to draw one more line segment to

create a rectangle into the books

Invite 2 students to come up and work on boars

Ask students if they have other ideas and show the

way how to do it

4. Sum-up

( 2 mins )

Ask students to repeat the conclusion: “A rectangle

has 4 right angles, 2 long equal sides, 2 short equal

sides”

Teacher feedback about the lesson

Require students to prepare the next lesson

“Squares”

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