How Much Can It Hold?
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Approach:  Station  
Level: Year 4 and year 8
Focus: Capacity estimation  
Resources:
4 containers: milk bottle, yoghurt pottle, juice packet, medicine container; answer booklet
127kb
Questions/instructions:  

Here are four containers.
Write down how much each container
holds using litres (L) or millilitres (ml).

   
 
% responses
2009 ('05)
y4
y8
1. How many mls of milk do you think the bottle could hold? 800 – 1200 ml
22 (24) 48 (53)
  1201 – 2000 ml
6 (5) 7 (6)
more than 2 litres
10 (8) 0 (2)
500 to less than 800 ml
6 (2) 11 (6)
less than 500 ml 42 (46) 24 (28)
2. How much yoghurt do you think the pottle could hold? tick 120–180 ml
2 (1) 17 (16)
  181–300 ml
5 (3) 16 (21)
more than 300 ml
18 (17) 6 (7)
75–119 ml
7 (6) 14 (14)
less than 75 ml 42 (52) 26 (27)
3. How much juice do you think the packet [juice box] could hold? tick 200–300 ml 9 (7) 40 (46)
  301–500 ml 7 (4) 12 (12)
more than 500 ml 13 (16) 5 (6)
125–199 ml 2 (2) 6 (6)
less than 125ml 46 (51) 22 (21)
4. How much medicine do you think the container could hold? tick 40–60ml
10 (7) 26 (24)
  61–100ml
6 (5) 15 (18)
more than 100ml
15 (15) 9 (13)
25–39ml
3 (4) 8 (8)
less than 25ml 38 (47) 19 (21)

Total score:
7–8
1 (1) 12 (15)
5–6
5 (4) 25 (26)
3–4
12 (8) 22 (24)
1–2
29 (31) 26 (18)
0 53 (56)
15 (17)
Subgroup Analysis [Click on charts to enlarge] :
Year 4


Year 8


Commentary:
The volume estimates on this task were handled poorly, with about half of year 4 students and one quarter of year 8 students estimating more than double or less than half of the actual capacity of the containers. At both levels, students performed very similarly in 2005 and 2009.