Semester 2 Topic 7 Level J

Task Name : Golf Course Angles Task Level : J (Year 9)
Semester : 2 Topic : Angles VC Strand : Geometric Reasoning
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Equipment Needed : Stiff card (a roll of corrugated cardboard is usually purchased), rulers, protractors.
Victorian Curriculum outcome : Use the enlargement transformation to explain similarity and develop the conditions for triangles to be similar; Solve problems using ratio and scale factors in similar figures
Task description : Create a scalene triangle golf hole. Create a similar triangle that is 1.5 times bigger. Create a third similar triangle where the longest side is 20cm.
Assessment options : Photographs of Golf Course Holes
Teacher notes : Students tend to make the holes too small to measure accurately: a hole should be around half the size of an A4 sheet of paper. Encourage students to use colour or even little props to make their holes a bit more interesting and creative.