RIC-20153 ACM Measurement and Geometry (Yr 3) Geometric reasoning
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Sub-str<strong>and</strong>: <strong>Geometric</strong> <strong>reasoning</strong>—GR – 1<br />
RESOURCE SHEET<br />
Make <strong>and</strong> use an angle demonstrator<br />
• Make two (2) circles about the same size as the one below; one in a light<br />
colour, the other in a darker colour. Carefully cut a line to the centre as<br />
shown below.<br />
CONTENT DESCRIPTION: Identify angles as measures of turn <strong>and</strong> compare angles in everyday turns<br />
©R.I.C. Publications<br />
Low Resolution Images<br />
Display Copy<br />
• Place one circle inside the other as shown. You can now turn one circle of<br />
your angle demonstrator within the other to show different angles.<br />
• Use your angle demonstrator to show a right angle (90°), an angle less than<br />
90° <strong>and</strong> a straight angle (180°). Draw these onto a sheet of paper. How can<br />
you show a full turn?<br />
Australian Curriculum Mathematics resource book: <strong>Measurement</strong> <strong>and</strong> <strong>Geometry</strong> (Year 3) R.I.C. Publications ® www.ricpublications.com.au 77
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