INTRODUCTION TO COORDINATES Form 1 Mathematics Chapter 8 INTRODUCTION TO COORDINATES

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

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

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 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

Coordinate System Where is the disabled seats?

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

Rectangular coordinates What is ( x , y )?

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

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

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

Enjoy the world of Mathematics! Ronald HUI