In this session, Yeap Ban Har introduced to the participants challenging problems, mostly teacher-created ones, taken from Singapore classrooms.

1. MAKING CONNECTIONS problems from singapore classrooms Dr Yeap Ban Har National Institute of Education Nanyang Technological University Singapore banhar.yeap@nie.edu.sg Slides available from www.mathz4kidz.com

2. DaQiao Primary School, Singapore

3. 12 ÷ 4 = 3 1 ÷ ¾ = ?

4. 12 ÷ 4 = 3 1 ÷ ¾ = ? 1 ÷ ¾ = 2 ÷ ¾ = 3 ÷ ¾ = n ÷ ¾ =

5. 

6. 

7.  12 ÷ 4 = 3 making connections 3 ÷ ¾ = 4

8.  12 ÷ 4 = 3

9. 

10. Primary Mathematics Standards Edition Grade 6

11. 

15. 

17.  210

18. 210 MrsHoon sold 960 cookies.

19.  A lion weighs 135 kg. A cow weighs 87 kg more than the lion. An elephant weighs 139 more than the cow. How heavy is the elephant? (Primary 2) TelokKurau Primary School, Singapore

20. 135 kg 87 kg 139 kg

21.  A lion weighs 135 kg. A cow weighs 87 kg more than the lion. An elephant weighs 139 more than the cow. How heavy is the elephant? (Primary 2) TelokKurau Primary School, Singapore

22.  After Shop A Shop B

23.  156 kg Before Shop A Shop B 156 kg – 72 kg = 84 kg 72kg 3 units = 84 kg 1 unit = 84 kg ÷ 3 = 28 kg 72 kg – 28 kg = 44 kg Shop B sold 44 kg of rice. Shop A sold 44 kg of rice.

24. half  $1890 handbag

25. three-fourths  $1890 handbag

26. three-eighths  $1890 handbag

27.  handbag $1890 12 units = $1890 1 unit = $1890 ÷ 12 = $ $1200 $690 1 unit = $1890 ÷ 12 = $157.50 $600 $90 35 units = $157.50 x 35 = $ Her salary is $5512.50 . $60 $30

28.  apples 192 + 24 24 pears 8 units = 192 + 24 = 216 1 unit = 27 There were 5 x 27 apples at first. There were 3 x 27 – 24 pears at first. There were 78 more apples than pears at first.

31.  5 parts 45 women 12 men 2 parts

32.  women men

33. MAKING CONNECTIONS problems from singapore classrooms Dr Yeap Ban Har National Institute of Education Nanyang Technological University Singapore banhar.yeap@nie.edu.sg Slides available from www.mathz4kidz.com