Kiểm tra bài cũ
Viết các phép chia dưới dạng phân số :
 
 
 
 
VIỆT NAM - INDONESIA
2
1
Giới thiệu tỉ số
Toán 4, trang 146 -147
Ví dụ 1 :
Một đội xe có 5 xe tải và 7 xe khách .
Số xe tải :
Số xe khách :
- Số xe tải bằng bao nhiêu phần số xe khách ?
5 : 7
 
Ta nói rằng :
- Tỉ số của xe khách và số xe tải là
?
- Tỉ số của số xe tải và số xe khách
số thứ nhất
số thứ hai
:
hay
số thứ nhất
số thứ hai
Muốn tìm tỉ số của số thứ nhất và số thứ hai ta làm như thế nào ?
Muốn tìm tỉ số của số thứ nhất và số thứ hai ta lấy số thứ nhất chia cho số thứ hai.
Ví dụ 2 :
Bài 1 : Viết tỉ số của a và b , biết :
a, a = 2
b = 3
b, a = 7
b = 4
c, a = 6
b = 2
d, a = 4
b = 10
Overview
01
You could enter a subtitle here if you need it
“This is a quote. Words full of wisdom that someone important said and can make the reader get inspired.”
— SOMEONE FAMOUS
If you want to talk about Mercury, you could say that it’s the closest planet to the Sun and the smallest one in the Solar System
What Is This Topic About?
Mars
Definition of Concepts
Venus
Mercury
Despite being red, Mars is a cold place
Venus is the second planet from the Sun
Is the smallest one in the Solar System
Mercury
Features of the Topic
Jupiter
Mars
Mercury is the closest planet to the Sun
It’s a gas giant and the biggest planet
Despite being red, Mars is a cold place, not hot
Venus
Venus is the second planet from the Sun
9,200,000 km2
is the area covered by the Sahara
is the average rainfall per year in the Atacama Desert
67,700 people
live in the Kharga Oasis
15 mm
Venus
Mars
Mercury
Venus is the second planet from the Sun
Despite being red, Mars is a cold place
Mercury is the closest planet to the Sun
Saturn
Jupiter
Neptune
It’s the ringed one and a gas giant
It’s a gas giant and the biggest planet
Is the farthest planet from the Sun
Practical Uses of This Subject
A Picture Always Reinforces the Concept
Images reveal large amounts of data, so remember: use an image instead of a long texts
Multimedia
Despite being red, Mars is a cold place, not hot. It’s full of iron oxide dust, which gives the planet its reddish cast
Insert your multimedia content here
Venus
Venus is the second planet from the Sun
Saturn
Jupiter
It’s the ringed one and a gas giant
It’s a gas giant and the biggest planet
Did You Know This?
1,000.000
Big numbers catch your audience’s attention
Problem
Solution
Venus has a beautiful name and is the second planet from the Sun
Despite being red, Mars is a cold place. It’s full of iron oxide dust
Problem VS. Solution
Process Timeline
Day 2
Jupiter is a gas giant
Day 4
Saturn has rings
Venus is terribly hot
Day 5
Neptune is far away
Day 3
Day 6
The Sun is a star
Earth harbors life
Day 1
Overview Diagram
Jupiter
Mercury
Saturn
Jupiter is a gas giant
Saturn has rings
The Sun is a star
You Could Use a Map
Mars
10,000
Despite being red, Mars is a cold place
Venus
25,000
Venus is the second planet from the Sun
Exercise 1
Exercise 2
You Could Write the Name of These Figures
____________________________
____________________________
____________________________
1.
2.
3.
Assignments
You could write you assignment here
You could write you assignment here
You could write you assignment here
You could write you assignment here
You could write you assignment here
Venus
Do you have any questions?
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+91 620 421 838
yourcompany.com
Thanks!
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