Posting Parcels
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Approach:  Station
ACCESS
Level: Year 4 and year 8
Focus: Measuring weight; reading a table  
Resources:
3 parcels, scales, N.Z. Post table, answer booklet
147kb
Questions/instructions:

Look at the three parcels that need to be posted.
Use the scales to weigh each parcel.
   
 
% responses
2009 ('05)
y4
y8
1. Write down how much each parcel weighs. Remember to write the unit of measurement.    
Parcel A (300 gm): 275 – 310 gm 79 (75) 64 (61)
  > 310 gm 11 (13) 28 (30)
  < 275 gm 4 (8) 2 (5)
Appropriate units given: yes 40 (39) 77 (82)
  no, no units 24 (20) 5 (7)
  no, inappropriate units 36 (41) 18 (11)
Parcel B (1.1 kg): 1.075kg – 1.125 kg 22 (17) 54 (57)
  > 1.125 kg 22 (17) 21 (19)
  < 1.075 kg 31 (32) 9 (14)
Appropriate units given: yes 41 (38) 68 (76)
  no, no units 27 (19) 5 (7)
  no, inappropriate units 32 (43) 27 (17)
Parcel C (555 gm): 525 – 585 gm 6 (4) 28 (27)
  > 585 gm 72 (72) 55 (56)
  < 525 gm 14 (15) 7 (10)
Appropriate units given: yes 39 (37) 74 (82)
  no, no units 27 (19) 5 (7)
  no, inappropriate units 34 (44) 21 (11)
Use the New Zealand Post chart to work out the answers to these questions.    
2. How much would it cost to send      
Parcel A Across Town? $2.50 68 (61) 87 (93)
  $5.00 10 (15) 2 (3)
3. How much would it cost to send      
Parcel B Between Islands? $10.90 22 (20) 56 (61)
  correct cost for reported weight 10 (13) 7 (7)
4. How much would it cost to send      
Parcel C Within Islands? $4.20 43 (33) 68 (75)
  correct cost for reported weight 5 (7) 5 (1)
 
Total score:
8–9
6 (3) 27 (30)
6–7
18 (12) 35 (41)
4–5
26 (25) 24 (18)
2–3
33 (40) 8 (9)
0–1 17 (20)
6 (2)
Subgroup Analysis [Click on charts to enlarge] :
Year 4


Year 8


Commentary:
Many students weighed Parcel C to the nearest 100 grams (600gm), rather than more precisely (Parcel C actually weighed 555gm). Year 4 students scored slightly higher in 2009 than 2005, and year 8 students slightly lower. On average, year 4 Mäori and Pasifika students scored substantially lower than Pakeha students.