RIC-20164 ACM Measurement and Geometry (Yr 5) Using units of measurement 2
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HANDS-ON ACTIVITIES (CONTINUED)<br />
Sub-str<strong>and</strong>: <strong>Using</strong> <strong>units</strong> <strong>of</strong> <strong>measurement</strong>—UUM – 2<br />
• Students work out the area <strong>of</strong> a rectangle by counting the total number <strong>of</strong> squares, one at a time. Next, they count<br />
the number <strong>of</strong> squares in one row <strong>and</strong> work out how many rows there are altogether. Students then investigate any<br />
relationship between the sets <strong>of</strong> figures. To assist in this, a table could be drawn up.<br />
Rectangle<br />
Rectangle<br />
Number <strong>of</strong> squares in<br />
each row (length)<br />
Number <strong>of</strong> rows<br />
(width)<br />
Total area<br />
1 5 3 15 cm 2<br />
2<br />
3<br />
Number <strong>of</strong> squares in<br />
each row (length)<br />
Number <strong>of</strong> rows<br />
(width)<br />
Perimeter<br />
Total area<br />
1 5 3 10 + 6 = 16 cm 15 cm 2<br />
2<br />
3<br />
Area <strong>of</strong> each row <strong>of</strong> the<br />
rectangle is 5 cm 2<br />
There are 3 rows; so the area<br />
<strong>of</strong> the rectangle is 15 cm 2<br />
• Students may use a similar format to the one above, but include a column for calculating <strong>and</strong> recording the perimeters.<br />
• <strong>Using</strong> a Geoboard, students investigate area <strong>and</strong> perimeter <strong>of</strong> various shapes.<br />
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The perimeter is 8<br />
<strong>units</strong> <strong>and</strong> the area is<br />
3 square <strong>units</strong>.<br />
The perimeter is 12<br />
<strong>units</strong> <strong>and</strong> the area is 6<br />
square <strong>units</strong>.<br />
The perimeter is 18 <strong>units</strong> <strong>and</strong><br />
the area is 9 square <strong>units</strong>.<br />
22 Australian Curriculum Mathematics resource book: <strong>Measurement</strong> <strong>and</strong> <strong>Geometry</strong> (Year 5) R.I.C. Publications ® www.ricpublications.com.au
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