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57.
Make a production estimate for a drawbridge
made of wood, using the following unit prices for
the materials:
❚❚
half a sheet of plywood (€1.20/unit)
❚❚
300 x sticks (€0.02/unit)
❚❚
a tube of glue (€2.00/unit)
❚❚
4 x hinges (€0.30/unit)
❚❚
40 x nails (€0.01/unit)
❚❚
16 x screws (€0.02/unit)
❚❚
2 m cord (€2.00/roll of 20 m)
58.
When you use surplus material from another
project, does it have a price? And a cost? Why?
59.
To make something from wood, we can either buy
two sheets of 40 cm x 30 cm at €0.25 per dm
2
each
or we can buy one sheet of 60 cm x 80 cm at €0.001
per cm
2
. Which option would be cheaper?
60.
Make a list of materials, tools and procedures you
need to make a skateboard.
61.
Make a list of the materials, tools and procedures
you need in order to reheel a shoe.
62.
Make a list of the materials, tools and procedures
you need to hang a picture on the wall.
FINISHING THE FINAL TASK
As a final task in this unit, after you have finished building and presenting your drip irrigation system, we suggest
that you check some things and give a group presentation with slides. This should serve as an instruction manual
and should include the following information:
1.
The drip irrigation system.
2.
The number of litres of water the system supplies before needing a refill.
3.
Possible improvements for the future.
4.
Post use: Possibilities of recycling and reusing the materials you’ve used.
5.
Contact information in case of any technical questions.
Designing a drip irrigation system
STUDY TECHNIQUES
❚❚
Write a summary using the key concepts boxes in the unit.
Include everything you think is important.
❚❚
Draw a mind map of the concepts in the unit.
Use the following structure to get started:
❚❚
Make a technical dictionary with the terms that you think are the most important. Include: planning, strategy,
project, technology, science, technical, views, breakdown, estimate … and add any others you think necessary.
consists of different
stages …
activities are
organised …
...
The technological process
Materials for technical use
The classroom workshop
...
...
23
1. The technological process
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ADVANCE EDITION
