1. Mathematics Ronald Hui Tak Sun Secondary School

2. Ronald HUI Reminder Standard Homework (III) Standard Homework (III) Deadline: Today! Deadline: Today! Open Book Quiz (Chapter 0) Open Book Quiz (Chapter 0) Deadline: 19 Sep (Wed) Deadline: 19 Sep (Wed) Closed Book Quiz (Chapter 0), Dictation 2 and Folder Checking Closed Book Quiz (Chapter 0), Dictation 2 and Folder Checking Last week of September Last week of September

3. Ronald HUI Revision Types of Fractions Types of Fractions Proper fraction ( 真分數 ) Proper fraction ( 真分數 ) Improper fraction ( 假分數 ) Improper fraction ( 假分數 ) Mixed number ( 帶分數 ) Mixed number ( 帶分數 ) http://zh.wikipedia.org/zh- hk/%E5%88%86%E5%BC%8F#.E5.88.86.E9.A1.9E http://zh.wikipedia.org/zh- hk/%E5%88%86%E5%BC%8F#.E5.88.86.E9.A1.9E http://zh.wikipedia.org/zh- hk/%E5%88%86%E5%BC%8F#.E5.88.86.E9.A1.9E http://zh.wikipedia.org/zh- hk/%E5%88%86%E5%BC%8F#.E5.88.86.E9.A1.9E

4. Ronald HUI Revision The following fractions are equal The following fractions are equal We can then compare different fractions We can then compare different fractions

5. Ronald HUI Addition, Subtraction Use improper fractions Use improper fractions Change to same denominators Change to same denominators Do operations on numerators Do operations on numerators LCM of 3, 2, 4 is 12

6. Ronald HUI Multiplication, Division Use improper fractions Use improper fractions Use reciprocal for division Use reciprocal for division Multiply numerators and denominators separately Multiply numerators and denominators separately Simplest Form!

7. Ronald HUI Time for Practice Pages 21 of Textbook 1A Pages 21 of Textbook 1A Questions 16 – 20 Questions 16 – 20 Ascending ( 遞升 )  increasing Ascending ( 遞升 )  increasing Descending ( 遞降 )  decreasing Descending ( 遞降 )  decreasing Pages 10 – 12 of Workbook 1A Pages 10 – 12 of Workbook 1A Questions 7 – 10 Questions 7 – 10

8. Ronald HUI Tools and units (p.22) Apply suitable units Apply suitable units Distance (Length): Distance (Length): 1 km= 1000 m(metre) 1 km= 1000 m(metre) 1 m= 100 cm(centimetre) 1 m= 100 cm(centimetre) 1 cm= 10 mm(millimetre) 1 cm= 10 mm(millimetre) Time: Time: 1 hr= 60 min 1 hr= 60 min 1 min= 60 sec 1 min= 60 sec

9. Ronald HUI Tools and units (p.22) Metric Prefix Metric Prefix kilo- (km, kg, …) kilo- (km, kg, …) centi- (cm, …) centi- (cm, …) milli- (mm, mg, …) milli- (mm, mg, …) http://zh.wikipedia.org/wiki/%E5% 9B%BD%E9%99%85%E5%8D%9 5%E4%BD%8D%E5%88%B6%E 8%AF%8D%E5%A4%B4 http://zh.wikipedia.org/wiki/%E5% 9B%BD%E9%99%85%E5%8D%9 5%E4%BD%8D%E5%88%B6%E 8%AF%8D%E5%A4%B4 http://zh.wikipedia.org/wiki/%E5% 9B%BD%E9%99%85%E5%8D%9 5%E4%BD%8D%E5%88%B6%E 8%AF%8D%E5%A4%B4 http://zh.wikipedia.org/wiki/%E5% 9B%BD%E9%99%85%E5%8D%9 5%E4%BD%8D%E5%88%B6%E 8%AF%8D%E5%A4%B4

10. Ronald HUI Tools and units (p.22) Mr. Hui loves long run! Mr. Hui loves long run! What unit should he use for Marathon? What unit should he use for Marathon? km km m cm cm mm mm

11. Ronald HUI Tools and units (p.22) Athletics Meet on 3 Oct Athletics Meet on 3 Oct Which unit should we use for 100m run? Which unit should we use for 100m run? hr / min / sec hr / min / sec Which unit should we use for 3000m? Which unit should we use for 3000m? hr / min / sec hr / min / sec Which unit should we use for long jump? Which unit should we use for long jump? km / m / cm / mm km / m / cm / mm

12. Ronald HUI Tools and units (p.22) Length:mm / m / km Length:mm / m / km Weight:mg / g / kg Weight:mg / g / kg Volume:ml / L Volume:ml / L Time:hr / min / sec Time:hr / min / sec Temperature: Temperature:  C ( 攝氏 ) /  F ( 華氏 )  C ( 攝氏 ) /  F ( 華氏 )

13. Ronald HUI Mathematics nearby How long a Marathon should have? How long a Marathon should have? 42.195 km 42.195 km 26 miles 385 yards 26 miles 385 yards http://hk.knowledge.yahoo.com/ question/question?qid=7006032 900468 http://hk.knowledge.yahoo.com/ question/question?qid=7006032 900468 http://hk.knowledge.yahoo.com/ question/question?qid=7006032 900468 http://hk.knowledge.yahoo.com/ question/question?qid=7006032 900468

14. Ronald HUI Revision for Quiz Textbook 1A Textbook 1A Pages 2 – 31 Pages 2 – 31 Workbook 1A Workbook 1A Pages 1 – 16 Pages 1 – 16 Summer Revision Summer Revision Pages 1 – 19 Pages 1 – 19 My PowerPoint files My PowerPoint files Your own notes Your own notes

15. Ronald HUI Good Luck! Enjoy the world of Mathematics!