INTRODUCTION TO COORDINATES

1
INTRODUCTION TO COORDINATES

• Form 1 Mathematics
• Chapter 8

2
Reminder

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

3
Reminder

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

4
Rectangular coordinates

• What is ( x , y )?

5
Rectangular coordinates

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

6
Rectangular coordinates

• Quadrant (??)

7
Time for Practice

• Pages 40 42 of Textbook 1B
• Questions 2 10
• Pages 14 15 of Workbook 1B
• Questions 2 7

8
Polar coordinates (p.58)

• Locate the position from a fixed point

9
Polar coordinates (p.58)

• One axisx-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

10
Polar coordinates (p.58)

• Radar
• Heyuan(??) is(3.3, 70?)
• Macau(??) is(1.4, 190?)
• Guangzhou(??) is (2.5, 130?)

11
Polar coordinates (p.58)
12
Time for Practice

• Pages 63 64 of Textbook 1B
• Questions 1 6
• Pages 25 16 of Workbook 1B
• Questions 1 4

13
Reminder

• Oral Re-Dictation
• 5 Feb (Tue) 7 Feb (Thu)
• CBQ
• 6 Feb (Wed)
• SHW (I) and SHW (IV)
• 25 Feb (Mon)

14

• Enjoy the world of Mathematics!