Stage Two.
Investigation and disassembly
1. Pupils shown an existing clock and mechanism and shown how it is
assembled / disassembled. Methods of fixing the mechanism to a simple clock
face explained.
Characteristics of plastics FPT
1. Range of plastics explored.
2. Costs of a variety of plastics discussed.
3. Working characteristics / properties investigated and demonstrated
where appropriate, FPT. Strength, toughness, hardness, density, stiffness,
thermal conductivity, environmental resistance.
4. Pupils should consider the range of effects achieved through the
combination of different materials and how these could be joined.
1. Vacuum forming demonstrated although this may not be a techniques used
by the pupils at this stage. Emphasis placed on how this technique could be
used for mass production.
2. Blow moulding covered in theory lesson.