INTRODUCTION TO INTRODUCTION TO COORDINATESCOORDINATES

Form 1 MathematicsChapter 8

ReminderReminder Lesson requirement

◦ Textbook 1B◦ Workbook 1B◦ Notebook◦ Folder

Before lessons start◦ Desks in good order!◦ No rubbish around!

ReminderReminder Oral Re-Dictation

◦ 5 Feb (Tue) – 7 Feb (Thu) CBQ

◦ 6 Feb (Wed) SHW (Chapter 8)

◦ Lunar New Year break

Rectangular coordinatesRectangular coordinates What is ( x , y )?

Rectangular coordinatesRectangular coordinates What are the coordinates of A, B

and C?

Rectangular coordinatesRectangular coordinates Quadrant (象限 )

Time for PracticeTime for Practice Pages 40 – 42 of Textbook 1B

◦ Questions 2 – 10 Pages 14 – 15 of Workbook 1B

◦ Questions 2 – 7

Polar coordinates (p.58)Polar coordinates (p.58) Locate the position from a fixed

point

Polar coordinates (p.58)Polar coordinates (p.58) One axis:

x-axis (polar axis) ( r , ) represents

a point with 2 values: radius vector and polar angle which are the corresponding distance (r) from the pole (0) and the anti-clockwise angle () from the polar axis

Polar coordinates (p.58)Polar coordinates (p.58) Radar Heyuan( 河源 ) is(3.3, 70)

Macau( 澳門 ) is(1.4, 190)

Guangzhou( 廣州 ) is (2.5, 130)

Polar coordinates (p.58)Polar coordinates (p.58)

Time for PracticeTime for Practice Pages 63 – 64 of Textbook 1B

◦ Questions 1 – 6 Pages 25 – 16 of Workbook 1B

◦ Questions 1 – 4

ReminderReminder Oral Re-Dictation

◦ 5 Feb (Tue) – 7 Feb (Thu) CBQ

◦ 6 Feb (Wed) SHW (I) and SHW (IV)

◦ 25 Feb (Mon)

Enjoy the world of Mathematics!

Ronald HUI