1. INTRODUCTION TO COORDINATES
Form 1 Mathematics
Chapter 8
INTRODUCTION TO COORDINATES

2. Reminder Lesson requirement Before lessons start Textbook 1B
Workbook 1B
Notebook
Folder
Before lessons start
Desks in good order!
No rubbish around!

3. Reminder SHW (II), SHW (III), OBQ Correction Oral Re-Dictation CBQ
Today
Oral Re-Dictation
5 Feb (Tue) – 7 Feb (Thu)
CBQ
6 Feb (Wed)
SHW (Chapter 8)
Lunar New Year break

4. Coordinate System 炮二平五 馬８進７ 傌二進三 砲８平９ 傌八進七 車９平８ 1 2 3 4 5 6 7 8 9
炮二平五
馬８進７
傌二進三
砲８平９
傌八進七
車９平８
九 八 七 六 五 四 三 二 一

5. Coordinate System
Where is the disabled seats?

6. Rectangular coordinates
Developed by Descartes
Also, know as Cartesian plane
Two axes: x-axis and y-axis
Both axes are directed number lines
( x , y ) represents a point with two values: x-coordinate and y-coordinate which are the corresponding distance along x-axis and y-axis

7. Rectangular coordinates
What is ( x , y )?

8. Rectangular coordinates
What are the coordinates of A, B and C?

9. Time for Practice Pages 40 – 42 of Textbook 1B
Questions 2 – 10
Pages 14 – 15 of Workbook 1B
Questions 2 – 7

10. Reminder Oral Re-Dictation CBQ SHW (Chapter 8)
5 Feb (Tue) – 7 Feb (Thu)
CBQ
6 Feb (Wed)
SHW (Chapter 8)
Lunar New Year break

11. Enjoy the world of Mathematics!
Ronald HUI