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Lesson�6:�Scissors�
Teacher’s Notes
To promote the wider use and
application of ICT skills and
practices, the children’s models
and work might be recorded using
a digital camera.
Design Task
Ask the children to modify the design of their K’NEX scis-
sors model so that it has a much stronger cutting or gripping
action. With the aid of a labelled drawing of their design,
they should write a description of how their design works
and state how their modifications have made the cutting
action stronger. They should also include the results of any
tests they carried out.
Extension Activity 1
If time is available the children might be asked to transfer
theirdesignintoresistantmaterials.Youmightaskthem,
for example, to make a pair of tongs from wood and other
appropriate materials that can pick up and hold an object
weighing 200g or more. What is the greatest weight their
tongs can lift?
Plenary
Select some models to share with the class and ask the
children to describe:
•Thereasonsbehindtheirdesign.“Wedidthis
because…”
•Whytheirdesignworksbetterthattheoriginalmodel.
•Thepartsoftheirdesignthatpleasethem.
•Whatteststheycarriedouttoevaluatetheirdesign
against the design brief.
Education
®
39


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