- View more resources from this publisherCentre for Research in Mathematics Education (CRME)
Floor pattern
This task is designed to assess how well students understand:
- Angles in quadrilaterals
- Rotation
- Geometric reasoning and proof
The task examines a floor pattern. The first example shows two overlapping squares, both with the same centre, but with one rotated through 45 degrees. The resulting shape can also be seen as a set of eight equal kites.
The first task is to find the measures of all four angles in the kites.
Two of the kites fit together along their shorter sides to form a hexagon. A quadrilateral is drawn around the shape. The task is to prove that the quadrilateral is a parallelogram.
This task is from the Mathematics Assessment Resource Service, a collaboration between UC Berkeley and the Shell Centre team at the University of Nottingham. A full rubric is given for the task, together with examples of student work and suggestions for helping students overcome misconceptions. Further information on the collection is given here.
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Floor pattern (rubric) 91.56 KB
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Floor pattern (student work scored) 701.84 KB
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Floor pattern (student work unscored) 579.18 KB
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Floor pattern (task) 114.12 KB