Evaluating Statements about Enlargements SS5
In this DfE Standards Unit resource, students explore the relationship between linear and area enlargement, substitute into algebraic statements and discuss some common misconceptions about enlargement. Students will have covered some aspects of enlarging shapes before, but they may not have explored the relationships between linear, area and volume enlargement. In this session lstudents sort statements into categories: always, sometimes or never true. Throughout their work on this activity, students justify and explain
their decisions using examples and counter-examples and present their ideas to the rest of the group by means of a poster. (GCSE Grades D-F)
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SS5- Evaluating statements about enlargement
Posted by sarahpage on 21st January 2011
Activity time: 1 hour
Level / prior knowledge: Level 7/8, enlarging shapes, perimeters and areas…
Activity time: 1 hour
Level / prior knowledge: Level 7/8, enlarging shapes, perimeters and areas of; squares, rectangles and circles, is necessary.
Subject / curriculum links / skills: Shape (properties of enlargements).
Preparation time: 20 mins - making smartboard for the lesson, looking over the lesson, copying handouts.
Extra resources: Smartboard file, scissors for pupils to cut out sorting cards.
I used this resource with top set year 9 (Level 7/8) as a last lesson on enlargements.
The starter sheet was good; it helped pupils recap perimeters and areas, which were required for main part of the lesson.
I liked that the whole group discussion was linked to the starter and helped pupils remember the value of ?. There is a need for more questioning than the lesson plan gives.
Pupils responded positively to the paired card sorting activity. I gave the class 5 minutes to see what they could do then gave them some hints with an example of a square. Then I gave them 20 minutes to try and classify all statements. Some pupils might need a recap of volume and surface area.
Pupils benefitted from feed backing to another group.
We did not get onto sheet 2.