:Flat Shapes
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Approach: One to one  Level: Year 8
348KB
Focus: Nets of 3D objects.
Resources: Laptop computer with video recording of instructions and example; bottle with label, Jaffa packet, ruler, measuring tape. Movie Icon Movie/Zipped: 8.9MB
Questions/instructions:
This activity is done on the computer. Click the button that says Flat Shapes Part 1.
Click the Play button and watch the video that plays.   Then:

% responses
2001 ('97)
y8
1. Draw the shape of the label before it was put on the bottle (to the nearest centimetre).

Label the length of each line.
label shape is rectangular
87 (89)
label size recorded accurately
with or without units (8.5–8.9cm x 3.5–4.5cm)
21 (27)
recorded but incomplete or inaccurate
28 (23)
2.Write the name of the shape.
rectangle or oblong
Answer:
68 (75)
Click the button that says Flat Shapes Part 2. Click the Play button and watch the video that plays.The video tells you what to do with the Jaffa packet.

3. Remember: you need to draw what the Jaffa packet looked like before it was made (to the nearest centimetre).

• Draw dotted lines to show where you would fold it.
• Label the parts of your drawing.
• Label the length of each line.
Drawing of Jaffa box:
4 sides, 2 ends, 3 glueing flaps, 4 small flaps appropriately proportioned
10 (8)
as above, except not including 4 small flaps
7 (11)
4 sides and 2 ends, appropriately proportioned
30 (34)
basic idea correct but significant distortions
27 (18)
Measurements given and accurate:
(12–13cm, 3.1-3.9cm, 1.6–2.4cm)
all major
4 (20)
most major
27 (17)

Commentary
Finer details and dimensions were often omitted. With the exception of recording dimensions (done better in 1997), the 2001 and 1997 results were similar.
 
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